共查询到20条相似文献,搜索用时 125 毫秒
1.
血痕的种属鉴定,最早是应用抗人血清作环状沉淀试验,后来使用特异性更好的抗人血红蛋白沉淀素血清替代抗人血清作各种沉淀试验.此外,还有应用抗人球蛋白消耗试验、间接血凝试验法、胶乳载体试验法.近来,随着免疫学实验技术的发展,应用酶联免疫技术等检测人血液中各种特异组分作血痕的种属鉴识.本文使用荧光标记抗体检测人血痕中的IgG组分,作人血和动物血的鉴别,取得较好结果,现将实验报告如下: 相似文献
2.
抗人精液血清特异性的研究 总被引:1,自引:0,他引:1
确证精斑常用抗人精液血清作沉淀反应。这种抗血清特异性差,常与人类某些体液发生交叉反应,以致精斑确证试验结果不可靠,影响鉴定结果的准确性。作者用人类精子、精浆、精液与人类精浆特异性抗原p30分别免疫家兔,制备各种抗血清,用环状沉淀、琼脂双向扩散及免疫电泳等技术对这些抗血清的特异性进行了研究,报道如下。 相似文献
3.
4.
5.
6.
本文通过吸收抑制试验证明了抗人血红蛋白沉淀素血清中存在的那种能凝集人类红细胞的凝集素,实际上就是用人的红细胞免疫家兔而产生的抗人红细胞凝集素.为考察抗人红细胞凝集素血清对血痕种属的鉴识能力,本文用此抗血清作解离试验,对不同稀释度的新鲜人血痕、室内存放的久暂不一的人血痕和15种动物血痕进行了检测.得到的结果是,新鲜人血痕稀释至1/1000仍呈阳性;500例室内存放的人血痕中,存放时间在11年以下的448例全部能够准确测出;存放12-16年的52例人血痕中,有33例能够测出,余19例呈阴性;15种动物血痕全部呈阴性. 相似文献
7.
8.
9.
法医物证检验中的血清制品是由全血、细胞、血清及各种试剂经过一定技术处理制作而产生的,常用的有:抗人精血清、抗人Hb血清、抗动物血清以及各种单克隆抗体等,这些血清不仅适用于各大中城市的法医技术部门,也适用于区县局条件设备较差的法医技术部门.在历年来的检验案件过程中都发挥了重要的作用,实际工作中各种血清制品的购置与保存关系到抗体的有效使用,直接影响物证检验的结果,近年来,公安部物证鉴 相似文献
10.
11.
Semenogelin (Sg), a protein originating in the seminal vesicles and a substrate for prostate specific antigen (PSA or p30), is a useful marker for the identification of semen. And detection of Sg has been available commercially in a membrane test recently. PSA is commonly used to detect semen in forensic significant samples taken from sexual assault cases. The strip PSA test has been available commercially from various manufacturers for many years. In this study, we evaluated two immunochromatographic membrane tests, one for Sg and the other for PSA by analyzing human semen, other human bodily fluids/materials including urine, blood, saliva, sweat, breast milk, vaginal secretion and fecal materials, semen from various animals and forensic casework samples. The data demonstrate that both Sg and PSA strip tests provide rapid and sensitive method for identification of seminal plasma. These results show that the immunochromatographic method for Sg detection is useful for the identification of seminal plasma in forensic samples, an alternative to the method for PSA detection. 相似文献
12.
Methamphetamine in urine samples from abusers was detected by the latex agglutination inhibition reaction test with latex-antibody (Latex-Ab) and latex-methamphetamine (Latex-MA) reagents. Anti-methamphetamine antibody was produced in rabbits by immunization with bovine serum albumin (BSA)-methamphetamine conjugate. Latex particles were coated with antibodies or with rabbit serum albumin (RSA)-methamphetamine conjugate to obtain Latex-Ab and Latex-MA reagents, respectively. The results are read at 4-5 min after mixing the latex reagents. The sensitivity of this method for methamphetamine was 0.4 micrograms/ml urine. Methamphetamine analogs (methylephedrine, amphetamine, phentermine, methoxyphenamine, ephedrine, beta-phenylethylamine, OH-methamphetamine, OH-amphetamine, and OH-ephedrine) all cross-react in varying degrees, while glucosiurea and albuminurea give false positive results in the tests. Though attention must be paid to these effects this simple and rapid test is suitable for the mass screening of urine samples. 相似文献
13.
The sensitivity and specificity of a zinc spot test for the detection of semen were compared with those of an acid phosphatase detection method. As screening techniques both tests were found to be very sensitive, but the zinc test was more specific and was more reliable in older and especially in deteriorated specimens. It is concluded that the zinc spot test deserves at least the same place as the acid phosphatase test in the primary investigation of suspected semen stains and might well be the test of choice in older and poorly preserved stains. 相似文献
14.
A new method for identification of seminal stains is described, based on the immunologic demonstration of leucine aminopeptidase (LAP), which is extremely abundant in human semen and specific for the prostate as well as semen. An antiserum against human seminal plasma was obtained by repeated immunization of rabbits with seminal plasma and Freund's adjuvant. Ouchterlony's double immunodiffusion test and Culliford's precipitin electrophoresis were performed to demonstrate specific proteins of seminal plasma. LAP activity was visualized with L-leucyl-beta-naphthylamide as substrate and with Fast Garnet GBC as coupler. The immunologic analysis of LAP produced two precipitin lines with enzyme activity. One was observed in kidney, jejunum, pancreas, prostate, as well as in semen, and was completely absorbed with kidney homogenates. The other was found only in semen and the prostate and was not absorbed with kidney homogenates. When the anti-seminal plasma serum absorbed with the kidney was used, the semen-specific LAP could be demonstrated by precipitin electrophoresis only in seminal stains stored for up to 2 months, whereas it was not demonstrated in stains from other human body fluids. By means of precipitin electrophoresis the detection of the semen-specific LAP was possible at semen dilutions of up to 1:32. The method described here greatly enhances the value of semen identification and is quite recommendable for the examination of stains in medico-legal practice. 相似文献
15.
本文介绍一种制备高效价鸡抗人精血清的方法。给10只2kg 以上的公鸡同时静脉和肌肉注射5~10%混合人精液7~8次,获得特异性很强,效价达50,000倍左右的抗血清。通过实验和检案证明,对由于腐败污染、水浸或水洗而含微量精斑的检材,均能检出。 相似文献
16.
17.
This paper describes the detection of human HbA and human HbF antigens in bloodstains by an antibody-absorption test. In the test, antisera to human HbA or HbF were absorbed with biological stains, then the antibodies with decreased capacities for agglutination were titrated by a microtiter technique using latex particles coated with the corresponding antigens. This test was proved to be specific, sensitive and reproducible. The indicator latex particles coated with human HbA or HbF could be stored at -70 degrees C for over 10 years. 相似文献
18.
作者用自制的辣根过氧化物酶标记的抗精浆特异蛋白P_(30) 单克隆抗体,建立了简便快速检测精斑中P_(30) 鉴定人精斑的斑点法。通过颜色变化判定结果,阳性为紫蓝色斑点,阴性为无色。结果表明,仅人类精斑和前列腺浸液出现阳性斑点,人体其他体液及组织器官浸液均为阴性。对动物血、精斑也无交叉反应。标定精斑稀释到1600倍亦可得到阳性结果。 相似文献
19.
Old J Schweers BA Boonlayangoor PW Fischer B Miller KW Reich K 《Journal of forensic sciences》2012,57(2):489-499
Abstract: Tests for the identification of semen commonly involve the microscopic visualization of spermatozoa or assays for the presence of seminal markers such as acid phosphatase (AP) or prostate‐specific antigen (PSA). Here, we describe the rapid stain identification kit for the identification of semen (RSID?‐Semen), a lateral flow immunochromatographic strip test that uses two antihuman semenogelin monoclonal antibodies to detect the presence of semenogelin. The RSID?‐Semen strip is specific for human semen, detecting <2.5 nL of semen, and does not cross‐react with other human or nonhuman tissues tested. RSID?‐Semen is more sensitive with certain forensic evidence samples containing mixtures of vaginal secretions and semen than either of the commercially available PSA‐based forensic semen detection tests or tests that measure AP activity that were tested in parallel. The RSID?‐Semen kit also allows sampling a fraction of a questioned stain while retaining the majority of the sample for further processing through short tandem repeat analysis. 相似文献
20.
<正> 1978年美国Sensabaugh分离出精浆特异蛋白P30,并成功的制备出相应的抗P30血清。1987年我国也研制出抗人精浆特异蛋白P30血清,并应用该种抗血清建立了几种琼脂扩散和电泳方法鉴定人精斑。由于人精液中P30含量不高,平均为1.52±0.676mg/ml,鉴定微量精斑存在困难。为了更有效的提高方法的灵敏度。我们建立了鉴定微量人精斑的ELISA固相P30抗体法,现报告如下。 相似文献