| heterogenous | <biology> Of or pertaining to heterogenesis; heterogenetic. Source: Websters Dictionary (01 Mar 1998) |
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| heterogenous keratoplasty | Corneal transplant with donor material from another species. (05 Mar 2000) |
| heterogenous nuclear RNA | <molecular biology> Originally identified as a class of RNA, found in the nucleus but not the nucleolus, which is rapidly labelled and with a very wide range of sizes, 2-40 kilobases. It represents the primary transcripts of RNA polymerase II and includes precursors of all messenger RNAs from which introns are removed by splicing. (18 Nov 1997) |
| heterogenous vaccine | Vaccine that is not autogenous, but is prepared from the same species of bacterium. (05 Mar 2000) |