A . A.40%甲醛10ml,0.01mol/L蒸馏水90mlB . B.10%甲醛10ml,0.01mol/LpH7.4的PBS90mlC . C.40%甲醛10ml,0.01mol/LpH7.4的PBS90mlD . D.10%甲醛10ml,0.01mol/L蒸馏水90mlE . E.40%甲醛10ml,0.01mol/LpH7.4的PBS100ml
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