(来学网)IgM占血清总Ig的
  • A.
    (来学网)10%~15%
  • B.
    (来学网)1%~5%
  • C.
    (来学网)15%~20%
  • D.
    (来学网)20%~25%
  • E.
    (来学网)5%~10%