TI-Ag激活B淋巴细胞产生抗体需要哪些组分参与()
A.巨噬细胞
B.Th细胞
C.NK细胞
D.CD58(LFA-3)
E.CD80(BT-1)
参考答案:E
Students should keep in mind that there’s something more important than _______ fashion for them to seek after in _______ life.
A./; the
B./; /
C.the; /
D.the; the
18号普通单开道岔,允许侧向过道岔的最高速度分别为60km/h。