Figure 6.

Wide range of genetic variation among elephant endotheliotropic herpesvirus (EEHV) strains. Observed amino-acid polymorphisms among polymerase chain reaction–analyzed DNA sequences for the U51(vGPCR1) protein from 22 examples of EEHV1-associated hemorrhagic disease from North American (NAP#) or European (EP#) Proboscivirus cases. The particular characteristic motif between positions 252 to 260 defines the major subtype designation (A, B, C, D, or E). * = Four cases born at the same U.S. facility.