Which of the following cells is involved in the negative regulation of immune response?
A. Th1
B. Th2
C. Tfh
D. Th17
E. Treg
查看答案
Which of the following statements about γδT cells is wrong?
A. Its antigen receptor lacks diversity.
B. Recognition of antigens is restricted by MHC.
C. It is mainly distributed in skin and mucosa.
D. It has anti infection and anti-tumor effects.
E. Most of them are CD4(-)CD8(-)。
The coreceptor of CTL is
A. CD3
B. CD4
CD8
D. CD28
E. CD2
What can we know from this conversation?
A. The administrator does not arrange a separate test room for Bradley.
B. The administrator does not let Bradley take the test.
How did Bradley comment on his father's blessing?
A. He said that as he knew, his father's blessing was the best gift.
B. He said that in fact, his father's blessing was not enough.
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