A.40%甲醛10ml,蒸馏水90ml
B.0.1mol/LpH7.2~7.4的PBS90ml
C.10%甲醛10ml,蒸馏水90ml
D.0.01mol/LpH7.2~7.4的PBS90ml
E.0.01mol/LpH7.2~7.4的PBS90ml