细胞悬浮培养的最低有效密度一般为()
A.(0.5~2.5)X1000000个/ml
B.(0.5~2.0)X1000000个/ml
C.(0.1~0.5)X1000000个/ml
D.(2.0~2.5)X1000000个/ml
正确答案是A