天然ABO血型抗体属于() ["A.IgG类抗体","B.IgA类抗体","C.IgM类抗体","D.IgD类抗体","E.IgE类抗体"]
造成铸件浇铸不全的原因有哪些?
能经Fc段与肥大细胞和嗜碱性粒细胞表面FcεR结合的Ig是() ["A.IgG","B.IgA","C.IgM","D.IgD","E.IgE"]
下半口义齿开盒后,在修剪模型石膏时,应特别注意其具体操作是怎样的?
正常人血清中含量最低的Ig是() ["A.IgG","B.IgA","C.IgM","D.IgD","E.IgE"]
简析冷隔产生的原因。