O V D BIOSIS Previers 200l Help January to December 2001 Author Title Journal Fields Tools Combine Limit Basic Data Search history Results O Run Saved Search Enter Keyword or phrase: Map term to Subject heading Perform search Limit to: 厂 English厂 Abstracts厂 Reviews Humans Microorganisms Plants Latest Update Frm:9!」To:|2001 Copyright c) /998 Ovid Technologies, Inc