测定血痕MN型的血清制备

用免疫吸收方法制备的抗-M与抗-N血清,检测10天内的不相应的MN血型血痕和大约2年的相应MN型血痕,凡能获得特异性结果的抗血清才能用于血痕的MN血痕测定。否则,只能用于测定血液的MN血型。     

降解生物检材遗传标记检测的研究进展

降解生物检材遗传标记的检测一直是法医学实践和科研的难点。虽然PCR-STR分析技术能在一定程度上检测降解生物检材的遗传标记,但是对于某些高度降解的生物检材如骨骼、牙齿等的PCR-STR分型仍旧十分困难,存在不稳定性和分型异常现象。本文就近几年来PCR-STR分型技术在降解生物检材的法医实践中出现的问题和解决方法作一综述。     

用VBA语言开发群体遗传学统计分析软件

目的开发适用于短串联重复序列(STR)基因座群体遗传学统计分析的软件,促进和加快STR基因座群体遗传学基础研究。方法选用简单易用的MicrosoftVBAforExcel语言,利用宏功能,开发STR基因座群体遗传学统计分析软件。结果开发建立了基于VBA语言的“群体遗传学分析易”软件,能进行STR基因座群体遗传学分析。结论开发的基于VBA语言的“群体遗传学分析易”软件,具有计算统计功能完善、输入格式兼容性好、使用方便、输出格式清晰易懂的特点,可在国内外STR基因座群体遗传学研究领域推广应用。     

单亲案亲权鉴定结果判定策略

目的探讨用STR基因座进行单亲鉴定出现矛盾基因座时下结论的策略。方法根据基因频率和遗传规律,推导单亲案亲权鉴定时的非父排除率。根据平均单亲非父排除率和平均突变率,用二项分布公式分别计算出现不同数目矛盾基因座时真父和假父的概率和似然率(亲权指数)。结果对STR共显性基因座,其单亲非父排除率的计算公式为:PEM=∑i=n1pi2(1-pi)2 ∑i相似文献   

Incestuous paternity detected by STR-typing of chorionic villi isolated from archival formalin-fixed paraffin-embedded abortion material using laser microdissection

Microscopic examination of a blood clot expelled by a physically and mentally disabled woman taken to the emergency room because of genital bleeding revealed the presence of chorionic villi encircled by decidua, hemorrhage, and necrosis. In order to identify the father of the product of conception, sections of formalin-fixed, paraffin-embedded abortion material were subjected to laser microdissection: DNA extraction from chorionic villi selectively isolated from the surrounding tissues allowed successful STR-typing of fetal cells, which was otherwise prevented by excess maternal DNA. The large number of homozygous genotypes in the fetal profile suggested incestuous paternity. Analysis of reference DNA samples from male relatives excluded the woman's father, paternal grandfather, and maternal grandfather, whereas the obligate paternal alleles of the fetus were constantly present in the genotypes of the woman's brother, clearly demonstrating brother-sister incest (probability of paternity > 99.99999%).     

Genetic polymorphism at 15 tetrameric short tandem repeat loci in four aboriginal tribal populations of Bengal

POPULATIONS: This study reports the genetic polymorphism observed at 15 short tandem repeat loci D3S1358, TH01, D21S11, D18S51, D5S818, D13S317, D7S820, D16S539, CSF1PO, vWA, D8S1179, TPOX, D2S1338, D19S433, and FGA in four aboriginal populations of Bengal. The analysis was performed to decipher the suitability of CODIS as well as six other highly polymorphic and unlinked markers in Forensic Testing. Studied populations include four tribes: Karmali, Kora, Maheli, and Lodha.     

Analysis of Y-STR loci in a population sample from northeast China

POPULATION: A total of 141 unrelated Chinese Han male individuals living in Liaoning in northeast China.