题目内容

How many classes of immunoglobulins are there ()

A. 5
B. 6
C. 7
D. 4
E. 10

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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

Components participating in the classical activation pathway is ()

A. C1q
B. IgG4
C. IL-2
D. H factor
E. B factor

Which scientist applies cowpox vacacine preventing smallpox firstly ()?

A. Warner
B. Jenner
C. Burnet
D. Mitchell
E. Claman