CoPAP is a user-friendly web server, which performs accurate inference of coevolving characters as manifested by co-occurring gains and losses.
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Nucleic Acids Res. 2013 Jul;41(Web Server issue):W232-7. doi: 10.1093/nar/gkt471. Epub 2013 Jun 8.
CoPAP: Coevolution of presence-absence patterns.
Cohen O1, Ashkenazy H, Levy Karin E, Burstein D, Pupko T.