何谓ABO血型正定型和反定型?

作者: rantiku 人气: - 评论: 0
问题 何谓ABO血型正定型和反定型?
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解析 ABH血型抗原在第5~6周胚胎的红细胞上即可检测出来,但直到出生时抗原性仍不太强,2~4岁时才发育完全,终生不变。ABO血型抗体(IgM)在新生儿出生头几个月开始形成,5~6岁具有较高的效价,以后一直维持到青壮年期,到老年时期抗体水平又有所下降。

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