下列哪种物质是T细胞表面的协同信号分子受体
A.CD40分子B.CD8分子C.ICAM-1D.CD28分子E.CD4分子
参考答案:D
“春伤于风,邪气留连”而发生的病证是()。
A.疟疾
B.洞泄
C.温病
D.咳嗽
E.濡泻
— Why don't you ask him for help? You be good friends.
— We have disagreements and we haven't talked to each other for a long time. [ ]
A. are used to
B. are used as
C. used to
D. are used for