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Definition of Discordant

Discordant: 1. Showing discordance, lack of agreement. A couple may be discordant for a sexually transmitted infection, with one partner having it and the other not. 2. In transplantation genetics, between different species. A discordant xenograft is a transplant between members of very different species.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=38931
Last Editorial Review: 6/14/2012

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