CD31 CD31. PE-CAM CD31 http://en.wikipedia.org/wiki/CD31 CD31 http://en.wikipedia.org/wiki/CD31 Wikipedia CD31. CD31 CD31 CD31 http://en.wikipedia.org/wiki/CD31 CD31 Wikipedia http://en.wikipedia.org/wiki/CD31 CD31 CD31 CD31 CD31 CD31 CD31 CD31 PECAM1