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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。 相似文献
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采用单克隆抗A、抗B、抗H抗体致敏人O型红细胞 ,所获得的检验人体液 (斑 )的A、B、H指示红细胞 ,为检验人体液斑迹的ABO血型提供了一种新的试剂。在制备过程中 ,抗体载体的选定、致敏所需抗体的浓度和致敏环境的酸碱度都直接影响指示红细胞的凝集效价。经过反复实验探索 ,选择出了理想的条件。1 材料与方法1 1 人O型红细胞的醛化取多人份混合的人O型红细胞 ,用生理盐水充分洗涤后 ,将压积红细胞用 4℃预冷 ,含 0 5%戊二醛的PBS缓冲液稀释成 10 %的悬液 ,作用 30min后 ,2 0 0 0r/min离心 2 0min ,弃上清液 ;将压… 相似文献
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<正> 1946年Mourant发现能凝集约22%白种人红细胞的一种新抗体,称之为抗Le~a抗体。1948年Andresen发现与抗Le~a显示对立关系的另一种新抗体,称之为抗Le~b抗体。根据人的红细胞与这两种抗体有无发生凝集可以 相似文献
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Human-type blood group activities on the red blood cells (RBCs) of three chimpanzees were individually examined with commercial mouse monoclonal antibodies (anti-A, -B, -H, -M, -N, -Lea, and -Leb) as well as lectins (UEA-I and VGA) and conventional polyclonal antisera for the systems ABO, MN, Lewis, Rh-Hr, P, Kell, Kidd, Duffy, and Lutheran. For further analysis of the MN antigens, treatment of the RBCs with sialidase, trypsin, and chymotrypsin were employed. The activities recognized among the three chimpanzees were A, H, M, N, Leb, c, S, k, and Jka. The RBCs of the three individuals possessed the A antigen which showed the same serologic activity as the human A1. Those chimpanzee RBCs showed higher H-activity than the human A1 RBCs. The Lewis b activity was revealed by the absorption-elution method. The RBCs of the three individuals showed a reactivity to the polyclonal anti-M reagents, which was affected by both the sialidase and trypsin treatment. The RBCs of two individuals were agglutinated with the monoclonal anti-N. The receptor was sensitive to sialidase and chymotrypsin. The RBCs of the three individuals, however, did not react with the monoclonal anti-M or with one of the polyclonal anti-N. These results indicate structural differences in the glycophorins and MN antigens between the human and chimpanzee. 相似文献
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A micromethod based on the absorption elution technique was shown to be applicable to the detection of M and N blood groups of dried bloodstains on cotton cloth. Each antigen M and N was tested using two different types of antisera. Two hundred different bloodstains, stored up to six months, were analyzed. Conclusive results were obtained for M typing on 2.5-mm-long bloodstained threads. For N typing, some cross-reactivity of homozygous M stains with anti-N sera was observed. This may be explained by the structure of the M and N antigens on the red cell membrane. 相似文献
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