A . 40%甲醛10ml,0.01mol/L蒸馏水90ml
B . 10%甲醛10ml,0.01mol/LpH7.4的PBS90ml
C . 40%甲醛10ml,0.01mol/LpH7.4的PBS90ml
D . 10%甲醛lOml,O.01mol/L蒸馏水90ml
E . 40%甲醛10ml,O.01mol/LpH7.4的PBS100ml