与抗原结合后可激活补体经典途径的Ig是A.IgM和IgE B.IgM和IgG C.IgA和IgG D.IgE和IgG E.IgD和IgE

作者: tihaiku 人气: - 评论: 0
问题 与抗原结合后可激活补体经典途径的Ig是
选项 A.IgM和IgE B.IgM和IgG C.IgA和IgG D.IgE和IgG E.IgD和IgE
答案 B
解析 [分析]补体成分以酶原或非活化形式存在于体液中,补体系统必须激活才能发挥它的生物学作用,激活补体可有多条途径,发现最早、经典的途径是以抗原-抗体(必须是IgM或 IgG类)为主要激活物,因为此二类抗体有补体结合位点。

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