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Definition of Concordant

Concordant: 1. Showing concordance, complete agreement. A couple may be concordant for a sexually transmitted infection, with both partners having it. 2. In transplantation genetics, between closely related species. A concordant xenograft is a transplant between members of closely related species.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=38932
Last Editorial Review: 9/5/2004

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