mono·va·lent /ˌmɑnəˈvelənt/
  (a.)單價的,僅能抵抗某種病菌的
  mono·va·lent /ˌmɑnəˈvelənt/ 形容詞
  單價的,一價的
  Mo·nov·a·lent a.  Chem. Having a valence of one; univalent. See Univalent.
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  monovalent
       adj 1: containing only one kind of antibody [ant: polyvalent]
       2: having a valence of 1 [syn: univalent] [ant: polyvalent]