After the treatment of papain, IgG can be divided into ()
A. 2 Fab and Fc
B. F(ab')2 and pFc'
C. F(ab')2 and Fc
D. 2Fab and pFc'
E. Fab and Fc
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What kind of Ig is used for early diagnosis of infection ()
A. IgG
B. IgA
C. IgM
D. IgD
E. IgE
How many classes of immunoglobulins are there ()
A. 5
B. 6
C. 7
D. 4
E. 10
Which Ig has no hinge region ()
A. IgG
B. IgA
C. IgM
D. IgD
E. sIgA
The antigen binding region of IgM is formed by the following domains ()
A. VH+VL
B. CH+CL
C. Hinge region
D. VH
E. CL