单克隆抗M、抗N抗体的研制及初步应用

用人血型糖蛋白 A 和人红细胞分别免疫 BALB/C 小鼠。用被免疫的 BALB/C 小鼠脾细胞与 SP2/0骨髓瘤细胞融合,在37℃、5%二氧化碳培养箱中孵育10～15天,然后用 OM 和 ON 型指示红细胞分别检测培养上清液的凝集情况,筛选出能分泌高特异性和高效价抗 M 和抗 N 抗体的细胞株,并建立了 GM_4H3、GM_4H_4、N_2A_3和 N_2D_(10)细胞株。这些细胞株可持续分泌免疫球蛋白 G 类抗 M、抗 N 抗体。应用这些抗体,通过血凝法、解离法和 ELISA 斑点法,可进行血及血痕的 MN 分型。在血型检验中,优于多克隆抗 M、抗N 血清。     

The Compatibility of Fingerprint Visualization Techniques with Immunolabeling

The chemical composition of a fingermark potentially holds a wealth of information about the fingermark donor, which can be extracted by immunolabeling. Immunolabeling can be used to detect specific components in fingermarks; however, to be applicable in the forensic field, it should be compatible with commonly used fingerprint visualization techniques. In this study, the compatibility of immunolabeling with two different fingerprint visualization techniques, magnetic powdering and ninhydrin staining, was investigated on fingermarks deposited on glass and on nitrocellulose membranes. With dermcidin as antigen of interest, immunolabeling was performed successfully on all developed fingermarks. We can conclude that immunolabeling is compatible with magnetic powdering and ninhydrin staining, which can be of great forensic value.