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本文应用十二烷基硫酸钠—聚丙烯酰胺凝胶电泳(SDS-PAGE)首次对细粒棘球绦虫六钩蚴排泄分泌(ES)抗原的多肽组分进行了分析并同时对牦牛源棘球蚴原头节可溶性粗抗原的多肽组分进行了分析。应用10%凝胶,采用垂直板型电泳、考马斯亮蓝R-250染色进行SDS-PAGE的结果表明,六钩蚴ES抗原至少由14种多肽组分组成,分子量范围270~17.5KD,其中主要组分6种。原头节可溶性粗抗原至少由25种多肽组分组成,分子量范围230~17KD,其中主要组分13种。本项研究为功能性抗原的进一步分析、分离奠定了基础。 相似文献
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为探讨旋毛虫ES抗原对RAW264.7细胞TLR2/4mRNA表达的影响,分别取经0、2、5、15、30、45μg/mL ES抗原作用24h的RAW264.7细胞和用15μg/mL ES抗原作用0、3、6、12、18、24h后的RAW264.7细胞,采用半定量PCR方法检测TLR2和TLR4mRNA的表达水平变化。结果显示,随着ES抗原浓度的升高,TLR2/4mRNA的表达量逐渐上升,15μg/mL ES抗原组与空白对照组相比差异显著(P<0.05)。在15μg/mL ES抗原作用24h内,随着作用时间的延长,TLR2/4mRNA的表达量逐渐上升,作用18h后的表达水平升高,且与空白对照组差异显著(P<0.05)。证实,ES抗原可刺激RAW264.7细胞表面受体TLR2/4表达升高,且存在一定的剂量和时间效应。 相似文献
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《Science & justice》2020,60(1):1-8
Human biological samples with multiple contributors remain one of the most challenging aspects of DNA typing within a forensic science context. With the increasing sensitivity of commercially available kits allowing detection of low template DNA, complex mixtures are now a standard component of forensic DNA evidence. Over the years, various methods and techniques have been developed to try to resolve the issue of mixed profiles. However, forensic DNA analysis has relied on the same markers to generate DNA profiles for the past 30 years causing considerable challenges in the deconvolution of complex mixed samples. The future of resolving complicated DNA mixtures may rely on utilising markers that have been previously applied to gene typing of non-forensic relevance. With Massively Parallel Sequencing (MPS), techniques becoming more popular and accessible even epigenetic markers have become a source of interest for forensic scientists.The aim of this review is to consider the potential of alleles from the Human Leukocyte Antigen (HLA) complex as effective forensic markers. While Massively Parallel Sequencing of HLA is routinely used in clinical laboratories in fields such as transplantation, pharmacology or population studies, there have not been any studies testing its suitability for forensic casework samples. 相似文献
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