The Viruses
   The DNA and RNA Reverse Transcribing Viruses
     Family Retroviridae
       Subfamily Orthoretrovirinae
         Genus Epsilonretrovirus
           1 Walleye dermal sarcoma virusᵀ
           2 Walleye epidermal hyperplasia virus 1
           3 Walleye epidermal hyperplasia virus 2