The chimpanzee Lymphocryptovirus (LCV) is a herpesvirus which infects chimpanzee leukocytes. It is also known by the names: Pongine herpesvirus 1, PoHV-1, Herpesvirus pan, and Panine herpesvirus 1. It is 35 to 45% homologous to the human Epstein-Barr virus. The glycoprotein B (gB) gene of the chimpanzee Lymphocryptovirus is virtually identical to the corresponding gene in the orangutan lymphocryptovirus. This suggests that the virus may have been transmitted between chimps and orangutans relatively recently (either in the wild or in captivity).