Abstract
The polypeptide and RNA compositions of purified virions of eel virus European were compared to those of three strains (VR-299, SP and AB) of infectious pancreatic necrosis virus (IPNV) isolated from trout. All three IPNV strains could be distinguished by the relative mobilities of either the virion polypeptides or the double-stranded RNA genome segments. The eel virus had a similar polypeptide profile to strain AB IPNV but differences between the two viruses in the migration of genome segments indicated each was unique.