(来学网)制备冷沉淀时,离心后将上清分入空袋中,母袋沉淀内大约留有____血浆即可
  • A.
    (来学网)10~20ml
  • B.
    (来学网)15~30ml
  • C.
    (来学网)10~30ml
  • D.
    (来学网)15~20ml
  • E.
    (来学网)20~40ml