| 单词 | polyvalent | 
| 释义 | polyvalent [¦päl·i`vā·lǝnt]  CHEMISTRY Pertaining to an ion with more than one valency, such as the sulfate ion, SO42-. Also known as multivalent; polygen.  IMMUNOLOGY 1. Of antigens, having many combining sites or determinants.  2. Pertaining to vaccines composed of mixtures of different organisms, and to the resulting mixed antiserum.  | 
	
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