They all _____________ sorry for breaking the tree.[ ]
A. felt
B. say
C. made
答案:A
不属于病毒分离培养的传代细胞系是()
A.FL
B.HeLa
C.Hep-2
D.Vero
E.WI-38
正常骨髓象
A.骨髓增生极度减低 B.骨髓增生减低 C.骨髓增生活跃 D.骨髓增生明显活跃 E.骨髓增生极度活跃