Recording ourselves is very important, and we should watch our videos at least 3 times.
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If you get nervous, there is no need to look at the audience.
A. 对
B. 错
. 血清中含量最高的Ig是( )
A.IgM
B.IgA
C.IgG
D.IgD
.胎儿最早合成的免疫球蛋白是( )
A.IgE
B.IgG
C.IgM
D.IgA
关于免疫球蛋白(Ig)错误的是( )
A.由浆细胞产生
B.存在于B细胞表面
C.存在于血液和体液中
D.所有Ig都是抗体