中性缓冲甲醛固定液配方是()

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中性缓冲甲醛固定液配方是()

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

请帮忙给出正确答案和分析,谢谢!