The existence of three different viral agents in a tumour bearing European eel (Anguilla anguilla).
D000811:Anguilla / Q000382:microbiology*; D000818:Animals; D005393:Fish Diseases / Q000382:microbiology*; D008854:Microscopy, Electron; D009500:Neutralization Tests; D010212:Papilloma / Q000382:microbiology / Q000662:veterinary*; D012209:Rhabdoviridae / Q000145:classification / Q000302:isolation & purification*; D014713:Viruses, Unclassified / Q000302:isolation & purification*