Regional algorithms for calculating the chlorophyll concentration

Regional algorithms for calculating the chlorophyll concentration in the Baltic Sea have been developed

in several papers, in particular by specialists from the Institute of Oceanology, Polish Academy of Sciences (Darecki & Stramski 2004, Darecki et al. 2008, Woźniak et al. 2008). The applicability of these algorithms for determining Chl concentration in the Gulf Everolimus ic50 of Finland was tested with our field data; the results are discussed in section 4.1. We derived several algorithms in different forms specifically for the Gulf of Finland. After various tests, the input parameter was selected as X = log[Rrs(547)/Rrs(531)], where 547 and 531 nm are the effective wavelengths of the MODIS-Aqua spectral bands (see section 4.3). The regression equations were derived as Chl vs. X and log Chl vs. X with formulae of the first- and second-order: PFT�� mw #1 Chl = 183X – 7.73; Algorithms #1, #5 (n = 15) and #2, #6 (n = 25) were derived by using data from the expeditions of 2012 and 2013 respectively. The equations for these years differ clearly from each other,

but Student’s test shows that the differences between the regression coefficients of equations #1 and #2, #5 and #6 are not statistically significant in both cases. Equations #3, #4 and #7, #8 were derived for the combined data set (n = 40). The evaluation parameters for the above algorithms are given in Table 1; Figures 5 and 6 show the results in graphical form. The standard errors for algorithms #4 and #8 are equal to 3.26 mg m−3 and 3.37 mg m−3respectively; as seen from Figure 6, both algorithms

mostly overestimate Chl values < 5 mg m−3, but algorithm #8 does so to a lesser degree than algorithm #4. It is also seen that both algorithms underestimate Chl values < 5 mg Oxymatrine m−3, but algorithm #4 to a lesser degree than algorithm #8. As a result, algorithm #8 underestimates the average value of Chl (about 13%), but the average value of the ratio of Chlcalc/Chlmeas for this algorithm is ~ 1.14; in the case of algorithm #4 the calculated average value of Chl is practically equal to the measured one, but the ratio of Chlcalc/Chlmeas is 1.30. Since most of the waters in the study area have chlorophyll concentrations < 5 mg m−3, algorithm #8 was selected as the primary one. Figure 7 shows the spatial distribution of the chlorophyll concentrations calculated from MODIS-Aqua data on 22 July 2012 and 27 July 2013 using the selected algorithm. The maps show no basic differences between the chlorophyll concentration distributions in 2012 and 2013. Most of the study area is occupied by water with chlorophyll concentrations of 2–5 mg m−3, but there are heterogeneities within this gradation which may be > 5 and even 10 mg m−3 as well as lower values. The highest chlorophyll concentrations are recorded in the eastern part of the Gulf of Finland near Neva Bay and along the southern coast of the Gulf (especially in 2012).

The Zelt & Skjelbreia (1992) method was used for separating the i

The Zelt & Skjelbreia (1992) method was used for separating the incident spectrum from the reflected one. The statistical wave parameters Hmax, H1/10, Hs, Hm, Tmax, T1/10, Ts and Tm were defined by check details zero up-crossing for incident and transmitted wave time series (see list of symbols). Incident and transmitted wave time series were determined by inverting FFT of the incident and transmitted spectrum defined by the procedure described in the previous paragraph. To avoid the influence of wave reflection from the breakwater and dissipation chamber, the positions of the gauges were chosen to be a minimum of one wavelength away from the structure,

thereby preventing spatial variation of the statistical parameters (Goda 2000). The process of non-linear interaction can be explained from the point of view of physics in the following way: when a longer wave from an irregular wave train crosses the breakwater, waves of shorter

periods are superimposed on its wave profile, thereby reducing the statistical wave train periods. The phenomenon is evident in waves of considerable length but is less noticeable in shorter waves. Figure 2 presents an example of a time series (for Test 8, Table 1) with a considerable incident mean wave period Tm. This is an evident occurrence of superimposed shorter waves, which generate a larger number of waves behind the breakwater (calculated by the zero up-crossing method). Figure 3 Venetoclax datasheet shows an example of a time series (for Test 2, Table 1) with a shorter incident mean period Tm. There is no significant occurrence of superimposed shorter waves. The phenomenon is therefore more pronounced in wave trains Cyclin-dependent kinase 3 with a smaller Rc/Ls − i ratio. The reduction in the statistical wave periods (T1/10 − t, Ts − t and Tm − t) of the wave train, behind the breakwater, thus depends on the relative submersion Rc/Ls − i (Figure 4). The greatest reduction occurs at Tm, because it covers all the waves from the record, including the newly formed short period waves. Significantly, Ts and one tenth T1/10 wave periods indicate a smaller reduction in relation to the reduction of the mean period. The

maximum period is related to the wave of the greatest wave height in the wave train. As this value is not subject to statistical averaging, it causes extreme oscillations of relations Tmax–t/Tmax–i, and only limited conclusions can be drawn. In general, representative statistical wave periods are correlated, whereas the empirical interrelations were defined by Goda, 1974 and Goda, 2008 as Tmax ≈ T1/10 ≈ Ts ≈ 1.1–1.2 Tm. Considering that statistical periods depend on the form of the wave spectrum (Goda 2008), and that deformations of the wave spectrum occur when waves cross the breakwater, the question arises in what way the above relations between statistically representative periods change when the waves cross the breakwater.

Another stroke client provided the example of a previous

Another stroke client provided the example of a previous

operation to support the feasibility of a family-centered approach post-stroke: “They did it [family-centered Apitolisib approach] for my liver transplant, but not for my stroke, where my wife fell into a depression.” One health professional mentioned that a family-centered approach post-stroke is indeed provided in acute care but only in extremely complex cases: “We have case files where the patient has a file and the family has a file. It’s the same file number, but A, B, C, in cases, for example, when a patient is in a coma and we have to intervene with the family, especially with the family… That’s when we work with families for specific objectives that are in some way related to the patient, that provide information about the patient, specific objectives to work with the family. But it’s not the majority of cases…” Overall, health professionals were also in favor of implementing a systematic family-centered approach since it would increase clinical efficiency by reducing current barriers to collaborative work: “I wanted to use a more family-centered than

individual approach; it really would have been worthwhile; buy Sirolimus it’s so much easier being in a partnership with people in the network. For example, you have a child and her mother has had a stroke and is aphasic, it’s not going well at school, our social worker tries to contact the school social worker or psychologist, and one of them says it’s not part of their mandate, doesn’t call back, and refuses to provide essential information; it’s tedious and time-consuming… but that’s reality. The main objective cAMP of the study was to document ethical issues involved in the systematic inclusion of relatives as clients in the rehabilitation process, from three perspectives: that of relatives, individuals with a first stroke (stroke clients), and health professionals. Although

the Canadian Best Practice Recommendations for Stroke Care (www.strokebestpractices.ca) include involving relatives early on and throughout the continuum of stroke care, methods for doing so remain vague, and relatives are not systemically involved at present. Should relatives be involved only as partners, as sources of information, and therefore as caregivers? Or should they also be involved as clients with their own needs, even though they may not present specific medical conditions? Our results suggest that the predominant role for relatives is still that of a caregiver, despite the well-expressed needs of all stakeholders. None of the three groups of participants perceived relatives truly as clients. We will now discuss three important issues stemming from our data in relationship to the literature: (1) the clinical and ethical value of involving relatives, (2) who should be responsible for providing services to relatives post-stroke, and (3) the importance of communication.

Such evidences support an important role for TLRs and ligands in

Such evidences support an important role for TLRs and ligands in the regulation of inflammation and tissue repair (Erridge, 2010; Yu et al., 2010). Conversely, TLR4 deficiency is associated with less inflammation and attenuated infarctions after myocardial ischemia-reperfusion injury (Chao, Fluorouracil in vitro 2009; Oyama et al., 2004). These studies indicate a role for TLRs as critical modulators of cell survival and tissue injury but

it is important to verify the involvement of TLR4 in skeletal muscle repair following injury induced by B. jararacussu venom. C3H/HeJ mouse presents a mutation in the TLR-4 gene that causes replacement of proline to histidine residue at position 712 in the cytoplasmic domain of TLR-4 receptor which

prevents downstream signaling cascade transcription factors activation ( Poltorak et al., 1998). This study aimed to compare the regenerative capacity of skeletal muscles between mouse strains bearing functional TLR-4 receptor (C3H/HeN) and TLR-4 mutant (C3H/HeJ) that harbors a functional TLR-4 deficiency. C3H/HeJ (TLR4-deficient) and C3H/HeN (wild-type) six-week-old Z-VAD-FMK clinical trial isogenic male mice were maintained in the Cellular Pathology animal house facilities of the Institute of Biology at Fluminense Federal University with controlled temperature (24 °C) and 12 h light–dark cycle. The project was approved (protocol n° 176/09) by the Committee for Ethics in Animal Research of the Fluminense Federal University and followed the guidelines of the Brazilian College for Animal Experimentation (COBEA) in agreement with international regulations. B. jararacussu crude venom supplied by the see more Center of Studies of the Nature at

University of Vale do Paraiba (UNIVAP) was lyophilized and kept under refrigeration (4 °C). Just prior use venom solution was prepared by diluting 0.6 mg/kg (body weight) in 50 μl of a sterile 0.14 M saline solution ( Barbosa et al., 2008). Mice were anesthetized with intraperitoneal injection of ketamine (100 mg/kg) (Ketanest, Pfizer, Vienna, Austria) and xylazine (10 mg/kg) (Rompum®, Bayer, Vienna, Austria) in sterile saline solution. B. jararacussu venom solution was inoculated intramuscularly (IM) straight into the right gastrocnemius muscle. 50 μl venom solution was inoculated by intramuscular (IM) route into the right gastrocnemius muscle. Mice were sacrificed at 1, 3, 10 and 21 days-post injury (DPI) with lethal dose of anesthetic. Regional popliteal lymph nodes were excised and single-cell suspensions prepared by fine mincing the organs with needles in PBS pH 7.2. Cell suspensions were allowed to settle to remove debris, spun down at 100 × g for 5 min at 15 °C and cellularity assessed in a hemocytometer. Gastrocnemius muscles were dissected, weighed for comparison of venom-injected muscle with the contralateral control muscle, and result expressed as the percentage of tissue weight.

2 g/day of omega-3 fatty acids;

2 g/day of omega-3 fatty acids; HSP inhibitor in 2003, the World Health Organization (WHO), 1–2% of the calories coming from omega-3 fatty acids; in 2004, the International Society for the Study of Fatty Acids and Lipids, ≥500 mg/day of EPA + DHA. In 2004, the Food and Drug Administration (FDA) of the USA allowed the allegation of functional property for foods enriched with omega-3 fatty acids, although also suggesting that the consumption of EPA + DHA not exceed 3 g/day

due to possible adverse effects in the control of glycemia, increase in bleeding time and of LDL-cholesterol. The dependent variable of encapsulation process yield allowed one to obtain a representative model, which has a maximum peak at C5 (2.6:1.0 wall:core and 1.8:1.0 SPI:GA). The trials carried out with 1.5:1.0

SPI:GA, 1.0:1.0 wall:core and 6.0 UA of TG/g and 1.5:1.0 SPI:GA, 2.0:1.0 wall:core and 10.0 UA of TG/g presented approximately GPCR Compound Library 25 g and 22 g of EPA + DHA n 100 g of microcapsules, respectively. Thus it would be necessary to add 0.4 g or 0.45 g of microcapsules to 100 g or 100 mL portions of foods to consider the food as having the appeal of a functional property according to the determinations of the national Agency of Sanitary Vigilance (Brazil). The authors are grateful for the financial support received from the Brazilian governmental organs (Capes and CNPq) in the form of doctoral scholarships conceded to participants of this research. They are also grateful to the suppliers of the raw materials used in the study: Vital Atman, The Solae Company, CNI Colloides Naturais Brasil Comercial Ltda and Ajinomoto. “
“A trend that has apparently increased in recent decades has been consumer demand for high quality foods based on convenience with minimum requirements for preparation time (Goff, 2004). Frozen part-baked breads have the advantage in relation to conventional breads of Prostatic acid phosphatase their short preparation time, since they

need only to be removed from the freezer and placed in the oven (Nutrinews, 2011). Marketing outlets such as bakeries, supermarkets and convenience stores are a large market for frozen bakery products, together with the consumer who wants to bake bread at home, but is discouraged to spend the time and effort required to perform the whole process for producing them (Pyler, 1988). The production of frozen part-baked breads is similar to conventional breads, except that the former involves a freezing step between two baking stages. Freezing involves a lowering of temperature and a change of phase of water from liquid to solid. The physical properties of food products change dramatically depending on water availability and temperature (Blond & Le Meste, 2004). Consumer demand for healthy foods is another tendency observed nowadays. Dietary fibre is an important component in the definition of a healthy diet (Angioloni & Collar, 2011).

In foods, Maillard reaction is actually a series of subsequent an

In foods, Maillard reaction is actually a series of subsequent and parallel reactions that can occur simultaneously, influenced by each other as well as by the medium composition

[3]. Hodges proposed that they occur in three different stages, and each one would be characterized by the generation of certain products (markers) that would, then, indicate the severity of the heat treatment as well as the CX-5461 chemical structure loss of nutritional value, due to the blockage of the essential amino acid lysine. Actually the decrease in the protein biological value and the decrease in bioavailability of essential aminoacids (mainly lysine), due to heating or storage, were among the main drivers for the advances about Maillard reaction and products in foods. A few years after Hodge’s publication, in 1955, the discovery of the glycated form of hemoglobin, by Kunkel and Wallenius [4] and, later, in 1968, Rahbar [5] findings that HbA1c (an hemoglobin in which the N-terminal valine of the β chain of HbA is glycated) was elevated in the red blood cells from diabetic patients, confirmed Maillard’s prediction that this reaction happens in vivo and could be implicated in pathological conditions. Advances in this field were accelerated from the earlier 1980s, after Monnier’s

group pioneer work about glycation in lens proteins, proving that cross-linking of long life-span proteins resulted in pathological consequences, which was further observed in other tissues as vascular vessels and collagen [6]. In the sequence, other pioneer works linked glycation Selleckchem BMN 673 to oxidation of macromolecules and the pathological conditions and aging. Several good reviews are now available [1], [7], [8], [9••], [10•], [11], [12], [13] and [14]. The non-enzymatic browning reaction in the human body is referred as glycation, and the products generated are known as Advanced Glycation Endproducts (AGEs). There seems to be a consensus

among several researchers, that Maillard reaction (MR) and Maillard reaction products (MRP) are to be used to describe the non-enzymatic browning reaction in foods (or model systems) while glycation and AGEs are the terms to be used when referring to the reaction occurring within the living organism. Some confusion Etomidate is, yet, found on the use of this terminology since recent published papers use MR and glycation and AGEs and MRP indistinctively as synonyms. The pathways of the in vivo and in vitro reaction have been extensively reported [10•], [13], [15••] and [16] and will not be described in this paper. Irreversible modifications of protein structure, functionality and turnover are due to the cross-linking reaction and AGEs generation. These modifications, in turn, enhance the pathophysiological processes associated with diabetes and kidney diseases, as well as the development of atherosclerosis and neurodegenerative diseases.

The results of this study were consistent with the immunotoxicity

The results of this study were consistent with the immunotoxicity of heavy metal cadmium. After newborn Sprague-Dawley rats were exposed to a low concentration of cadmium (10 ppb) for 24 days through breastfeeding, the results revealed a gender-related impact on the cytotoxic effect of NK cells on both day 28 and day 63 (Pillet et al., 2005). Holásková et

al. (2012) reported that chronic exposure to low-dose cadmium in the parental generation causes a reduced selleck products proportion of splenic NK cells in the offspring mice, most likely leading to reduced tumour resistance. However, earlier studies revealed that NK cells are apparently not sensitive to the immunotoxicity that is caused by chronic exposure to lead or to lead combined with cadmium (Yücesoy et al., 1997 and Neilan et al., 1983). We reason that in addition to gender, these differences may be mainly due to the channel of exposure, the dose of exposure, the duration SP600125 of exposure, and the age at which exposure to the heavy metal occurs in the animal model. Additionally, DU is radioactive, which may also be

one of the reasons for its unique effect compared with other heavy metals. Previous studies on the effect of DU on macrophages mainly revealed the impact of soluble uranium on megakaryocytic cells (NR8383 or J774) or peritoneal macrophages via in vitro experiments ( Kalinich et al., 2002, Gazin et al., 2004 and Wan et al., 2006). The present study evaluated the immune function of mouse peritoneal macrophages after long-term exposure to DU and demonstrated that as the exposure dose increased, the ability of macrophage to secrete NO, TNF-α, IL-1β, and IL-18 decreased. All of these factors are Methane monooxygenase involved in the antipathogenic effector functions of macrophages ( Kawai and Akira, 2010). Therefore, inhibition of the secretory function of macrophages suggests that uranium exposure weakens the capability of animals to fight against infection. In agreement with the results of this study, Dublineau et al.

(2007) reported that, after rats were exposed to DU for 6 months through drinking water (40 mg/l), the secretion of NO was decreased in ileal tissue, which may be observed because uranium caused a reduction in NO-secreting cells (macrophages) in the ileal tissue, as well as a reduction in inducible NO synthase (iNOS) activators [C–C motif ligand 2 (CCL-2)] and an increase in NO inhibitors (IL-10). In the experiments of lead-induced immunotoxicity, the inhibition of the NO secretion from macrophages was considered to be a sensitive indicator ( Dietert and Piepenbrink, 2006). The exposure of peritoneal macrophages to lead (20 μM) for 72 h led to decreased NO secretion, a decreased phagocytic index, and significantly increased catalase levels, which may increase the incidence of infectious diseases ( Bussolaro et al., 2008).

This unique SEMF approach has been successfully performed clinica

This unique SEMF approach has been successfully performed clinically to access the peritoneal cavity for natural orifice transluminal endoscopic surgery applications and for the performance BIBW2992 purchase of myotomy in achalasia.16 and 17 Percutaneous endoscopically

assisted transenteric full-thickness biopsy is a novel clinically applied method for assessing histopathological abnormalities in GI neuromuscular disease patients. Initial experience showed abnormalities identified in 44% of patients such as possible degenerative leiomyopathy.18 and 19 The limitation of this technique compared with the SEMF technique or that obtained by standard laparoscopy is the small sample size, which is less than the size recommended

by the Gastro 2009 International Working Group guidelines and does potentially reduce diagnostic yield.20 Another approach that was used in a nonsurvival study evaluated colonic endoscopic full-thickness biopsies by using an EMR-based technique.21 Future studies are needed to assess the safety of this procedure.21 Other options for evaluating myenteric ganglia are also being investigated. The use of innovative submucosal probe–based confocal laser endomicroscopy that provides optical histological imaging is currently being evaluated in preclinical studies with promising results.22 and 23 Studies identifying a neuron-specific fluorescent stain for human use and addressing

Wortmannin solubility dmso any potential toxicity or long-term effects of these neuronal probes are under way. However, it is likely that subtyping neurons, immune cells, and ICC will continue to require tissue acquisition. In this context, our study technique using an invasive endoscopic approach allows the acquisition of sufficient tissue to facilitate quantitative and qualitative analysis of multiple cell types. The ready availability of such an endoscopic technique may lead to invaluable insights into the pathophysiology and potential novel targeted therapy of GI neuromuscular disorders. “
“In the article, “ Ki-67 grading of nonfunctioning pancreatic neuroendocrine mafosfamide tumors on histological samples obtained by EUS-guided fine-needle tissue acquisition: a prospective study,” in the September 2012 issue of Gastrointestinal Endoscopy (Gastrointest Endosc 2012;76:570-7), the color in Figure 2 is incorrect. The correct original figure appears below. “
“In the article “Engagement, Workplace Satisfaction, and Retention of Surgical Specialists in Academic Medicine in the United States,” by Philip Y Wai and colleagues, published in the July 2014 issue of the Journal of the American College of Surgeons, the online Appendix containing the survey instrument cited in the article is no longer available. The authors apologize for this error.

Adjuvants in earlier development phases are described in Chapter

Adjuvants in earlier development phases are described in Chapter 6 – Vaccines of the future. Novel water-in-oil emulsions have recently been developed for use in both therapeutic and prophylactic vaccines. Montanide™ ISA51 is a water-in-oil emulsion containing mineral oil and mannide-mono-oleate as an emulsifier. These emulsions

are used as adjuvants with epidermal growth factor (EGF) as antigen in ongoing Phase III studies against cancer. Montanide™ adjuvants induce a strong immune response with an improved safety profile compared with Freund’s water-in-oil emulsion, but mild-to-severe local reactions are still observed in about half of the subjects in clinical trials. For this reason the Montanide™ adjuvants are applied mainly in immunotherapy. HDAC inhibitor A non-small-cell lung cancer (NSCLC)

vaccine containing Montanide™ ISA51 as an adjuvant was recently registered in Cuba and Chile. Microbial DNA contains intrinsic immunostimulatory sequences (ISS) which act as ligands of intracellular TLRs, such as TLR9. When recognised by TLRs, ISS can lead to amplification of the adaptive immune response, in particular cell-mediated immunity. Several ISS with distinct biological activities have been characterised and preliminary clinical data show that the use of these sequences in vaccines can enhance humoral and cellular immune responses to the vaccine antigens. One example of an ISS is CpG 7909 (Figure 4.9), an agonist of TLR9 and an inducer of proinflammatory cytokines. CpG refers to a group of synthetic oligodeoxynucleotides Thiazovivin in vitro derived from bacterial DNA containing unmethylated CpG motifs. CpG 7909 stimulates TLR9, induces Th1 immunity and cytotoxic T-lymphocyte responses in animals, and is currently in Phase III clinical trials as part of an adjuvanted HBV vaccine (Cooper et al., 2004). AS01 combines the effects Phosphatidylethanolamine N-methyltransferase of three components: liposome, MPL (TLR4

agonist) and QS21. QS21 is a triterpene glycoside derived from a saponin extracted from the bark of the South American tree Quillaja saponaria ( Figure 4.10). Saponins are used widely as emulsifiers in cosmetics as well as in the food and drink industry. The crude extract, known as Quil A, was first limited to use as an adjuvant for veterinary vaccines due to its local reactogenicity. The purified QS21 fraction derived from Quil A has potent ability to enhance antigen presentation to APCs, especially to induce cytotoxic T-lymphocyte production when tested in animals ( Newman et al., 1997). It has been shown that QS21 as a surfactant can be used to facilitate penetration of proteins through cell membranes, thus inducing intracellular immune responses. QS21 has shown an acceptable tolerability profile for use in human candidate vaccines when properly formulated with ISCOM™ (immune-stimulating complex consisting of cholesterol and phospholipids), or liposomes.

22 Perforations are especially difficult

22 Perforations are especially difficult find more to close in scarred mucosa. Braided or spiral snares may be used, which have an additional spiral wire around the main snare cable, to improve gripping (spiral snare 20 mm, SnareMaster, Olympus, Tokyo, Japan). An alternative is the flat band or ribbon snare (flat ribbon snare 22 m, Resection Master, Medwork, Höchstadt, Germany). This snare comprises a flat band of metal to make the snare loop with the edge of the band orientated vertically to the mucosa. An alternative is to use a smaller braided snare to resect small

pieces at a time, reducing the risk that too much mucosa is gathered with associated muscle, as one might do for a scarred lesion in noncolitic colons (Fig. 5). A final option is the use of a double-channel

endoscope using a grasper to pull the mucosa into a snare, which is in the other channel. Although this technique guarantees the ability to grip the mucosa, the risk of perforation is significantly magnified, and experience and extreme care are needed. Owing to the scarring in colitis, the nature of resection of colitic lesions often entails piecemeal resection. Every attempt should be made to endoscopically resect any visible part of the lesion. However, piecemeal resection coupled with significant scaring may result in fragments or islands of dysplasia left at the resection site. Such areas need to be definitively but BMN 673 concentration safely destroyed. Argon plasma coagulation (APC) has been commonly used for this with some evidence from the EMR literature that it is effective in reducing recurrence.23 (Many EMR experts suggest that the need for this in noncolitic colons is now unnecessary because the EMR technique has improved; however, older, less-comprehensive EMR to some extent mimics the results in colitis so the two may be comparable.) Precise use of short pulses of APC is effective even for larger areas. Further attempts at injection before use of APC may allow the so-called melt effect seen with the IMP dehydrogenase use of APC for dysplasia ablation

in the duodenum.24 For small fragments, the use of the tip of the snare with soft coagulation allows effective ablation without overdelivery of energy and risks of a deep mucosal burn. Ultimately, the optimum is en bloc R0 snare or ESD resection with pathologic assessment of resected tissue. Ablation should be minimized. After resection, which should be as complete as possible at the first attempt, careful examination of the scar should be performed at between 2 and 6 months postresection, as well as pancolonic dye-spray of the whole colon to look for metachronous lesions. The use of dye-spray and advanced imaging on the scar can be helpful here to try and detect tiny areas of recurrence. Scar biopsy should be performed even if there is no recurrence.