A.黏膜免疫與IgA腎病發(fā)病機(jī)制無關(guān) B.IgA腎病患者血清中IgA1較正常人顯著增高 C.IgA腎病患者血清中IsA1的糖基化缺乏 D.在腎小球系膜區(qū)沉積的IgA免疫復(fù)合物幾乎為IgA1 E.IgA腎病患者血清中IgA1較正常人顯著降低