亚洲国产精品成人综合久久久久久久久精品免费看片国产欧美久久久久久精品一区二区三区_成人精品一区二区91毛片不卡_99久久精品无码一区二区毛片免费_亚洲国产成人精品女人久久久国产美女久久久_一本色道久久综合精品免费_久久久久久一级毛片免费野外黑人_免费欧美日韩精品一区二区三区||www.77wy.cn,久久香蕉成人免费大片,亚洲国产成人久久一区久久,4399视频手机在线观看免费,国产精品亚洲综合色区,亚洲欧洲自拍偷线高清一区二区||www.crgt.net.cn ,久久久久成亚洲综合精品,久久久久久无码国产精品中文字幕,国产黄a一级二级三级看三区,91精品国产综合久久久久久,国产欧美日韩精品一区二区三区蜜桃不卡||www.szchenchen.cn ,久久发布国产伦子伦精品,国产高清午夜精品福利色噜,91偷拍一区二区三区精品,日本XXXXX黄区免费看||www.mkznxc.cn

There are various blood typing card based on the presence/absence of inherited antigen on the surface of erythrocytes, AOB and Rh being the most popular ones.

The AOB system is related to the immunoglobulins anti-A and anti-B, produced during the first years of life. Presence/absence of certain glycolipids in erythrocyte membrane determines the A, B, AB, and O blood groups.

The Rhesus system is suffixed to the ABO system. Although there are about 30 different antigens in this group, the common blood tests focus only on antigen-D. Rh test shows whether an individual has (Rh positive) or does not have (Rh negative) the 'Rhesus factor', or antigen-D, expressed by a transmembrane protein.

ABO system:

Rh system: