共查询到18条相似文献,搜索用时 250 毫秒
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运用PCR-RFLP检验方法,对21份精斑样品、5份混合斑检材进行了检验,结果表明该方法能够很好地检测混合斑中精斑的ABO血型及基因型,有效地解决了非分泌型精斑的ABO血型及基因型,拓宽了混合斑中精斑的检验范围. 相似文献
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混合液(斑)尤其是精斑与阴道分泌液斑混合斑中精斑ABO血型的检验,迄今为止,仍是法医物证学界的研究难题.本文根据收集到的文献,从方法学上综述国内外这一方面的研究现状. 相似文献
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<正> 在法医物证检验中,直接检测单个精子的血型抗原,是判定混合斑中精斑血型的重要手段之一。本实验应用先进的免疫金银染色技术(Immunogold-Silver Stainning,IG SS)来检测人精子ABO血型抗原。 相似文献
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血膜热解离法检验体液斑中的ABO型物质,具有操作简单、检验时间短、灵敏、特异性高等优点,而且与中和法相比具有节省检材的特点,在实际检验中取得了较好的效果。材料和方法一、实验材料1.已知血型的人唾液斑、精斑、阴道分泌物斑纱布各1()份(从医院提取);2抗A、抗B血清(淮北市公安局血清室提供);3‘)型血痕纱布(采耳血涂在白绷带纱布上,室温保存,最长为1年)。二、实验方法(一)血膜热解离法检测体液斑ABt)血型l取ZCC长唾液斑、精斑、阴道分泌物斑纱线加入本理盐水3滴浸泡半小时或充分搅拌,取二满分别满于载被片两侧… 相似文献
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精液和阴道分泌液混合斑ABO血型的检验多采用中和法与热解离法同时检验,通过两种方法互相印证,有利于正确判定混合斑中的精斑血型。在检验O型或A型阴道分泌液与A型精液的混合斑时,偶而出现异常的B型物质,这一现象在国外已有报道[1、2]。本人在检案中见到三例,现将检验情况报道如下:材料与方法一、混合斑检林本室1984~1993年检验的已确证血型为O型或A型精液和阴道分泌液混合斑擦拭纱布43例。其中O型女子与A型男子的混合斑13例,A型女子与A型男子的混合斑15例,A型女子与O型男子的混合斑9例,O型女子与O型男子的混合斑6例。二、… 相似文献
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型特异性沉淀素血清检验人唾液斑精斑ABO血型的研究与应用 总被引:1,自引:1,他引:1
本文介绍了利用型特异性沉淀素血清环状沉淀法检验人唾液斑、精液斑ABO血型的方法与实验结果,并与中和试验及解离试验进行了比较。实验结果表明,本法操作简便,对多种干扰条件下的唾液斑、精斑均具有高度的型特异性,并能从分泌液与血液的混合斑中准确地鉴别出分泌液的血型。本法仅需0.4cm的分泌斑纱线即可进行血型鉴定,其灵敏度高于中和试验而略低于热解离试验,并能有效地检出陈旧分泌液斑中的型物质,因此适于在实际检案中应用。 相似文献
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1998年9月27日,海阳大闫家镇村民某某将一13岁小女孩骗至家中强奸。技术人员在现场提取了一团可疑的卫生纸,其上检出精斑。但犯罪嫌疑人拒不交代罪行,对于现场附有精斑的卫生纸,犯罪嫌疑人称是其与妻子发生性行为时所用。经常规ABO血型检验,受害人和犯罪嫌疑人妻子的血型均为“A”型;犯罪嫌疑人为“O”型,卫生纸上检出精斑且含“A”型物质。利用二步消化法分别将混合斑中的女性物质与精子DNA提取出来,进一步做DNA检验,经HUMTH01犤AATG犦n、HUMFABP犤AAT犦n、pMCT118、apoB位点扩增、电泳、银染,结果… 相似文献
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用酶标抗体免疫组化法测定性交后阴道内容物中精子的ABO血型 总被引:2,自引:1,他引:1
应用间接酶标抗体免疫组化法测出了53例新鲜精液、5例陈旧精斑及40例阴道分泌液中的精子与阴道脱落上皮细胞的ABO血型,30例精子与不同血型分泌型阴道分泌液孵育,未发现精子吸附阴道液中血型物质的现象,同时发现人类睾丸曲精细管中部份生精细胞、精子细胞,精子;直细精管部份上皮细胞、精液、精子;睾丸网大部份上皮细胞及副睾管中的精液与精子均含ABH抗原,故认为精子上的ABH抗原主要是精子固有抗原,13例性交后阴道内容物中精子的ABO型测定结果:7例与供者血型吻合,6例不吻合。6例中5例从O型精子中测出了女方分泌型阴道分泌液中的A或AB物质,1例B型精子未测出B及H抗原,文中对这种现象进行了讨论。 相似文献
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ABO genotyping by polymerase chain reaction. 总被引:10,自引:0,他引:10
ABO blood group system's genotyping by polymerase chain reaction in genomic DNA level is developed. The positions of nucleotide 258 and 700 of cDNA from A transferase were used to distinguish A, B, and O alleles by restriction enzyme digestion. To identify the 258th nucleotide, a 199- or 200-bp DNA fragment was amplified by PCR and digested with Kpn I. For the 700th nucleotide, a 128-bp PCR amplified fragment was designed and digested with Alu I. By examining the DNA fragment digested patterns, ABO genotypes were easily determined. Results obtained using this method on 20 ABO-known peripheral blood samples showed that this new technique could provide accurate ABO genotype. Biologic forensic samples, such as, blood stains, saliva stains, semen stains, hair, bone tissue, and semen contaminated with vaginal secretion were also successfully typed. This rapid, sensitive and reliable method should be applicable not only in forensic identification but also in medical examination. 相似文献
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A blood group substance (BGS), a protein with ABH antigenic activity, was isolated from human seminal plasma and designated as p 84 (Sato, 1995). We have developed a method for determining the ABO blood type of semen by performing a sandwich enzyme-linked immunosorbent assay (ELISA) in which p 84 is captured with an anti-p 84 monoclonal antibody, and evaluated the specificity and sensitivity of this method. Although BGS activity was detected in semen sensitively by this method, it was not detected in saliva, urine, breast milk, blood or vaginal secretions. Since the concentration of p 84 in semen was independent of the secretion status, the status can be determined as non-secretor when p 84 but not BGS activity was detected. To determine the stability of BGS activity on p 84, dried stains of semen on filter paper were kept at 4, 26, and 37 degrees C for 8 months, 2 years and 1 month, respectively, and their BGS activities were examined. After 8 months at 4 degrees C, over 60% of the original BGS activity was recovered from the stain. The activity could be detected even from a square as small as 0.25 by 0.25 cm. After 1 month at 37 degrees C and 2 years at 26 degrees C, 31 and 20% of the BGS activity, respectively, still remained. It could be detected from the pieces of 1.0 by 1.0 cm and 0.5 by 0.5 cm squares, kept for 1 month at 37 degrees C and 2 years at 26 degrees C, respectively. Finally, semen was mixed with saliva or blood at varying volumetric ratios and used for the sources of dried stains. The BGS activity of p 84 could be detected in the stains until the ratio between semen and saliva or blood reached 1:4. We conclude that this sandwich ELISA offers a more sensitive and specific method for determining the ABO blood type of semen samples obtained from sexual assault victims than existing methods, such as the conventional absorption-elution and classical hemagglutination-inhibition tests. 相似文献