The Viruses
Count: [g] 3o;73f;289g;1903s
   The DNA and RNA Reverse Transcribing Viruses
  Count: [g] 5f;21g;166s
     Family Retroviridae
    Count: [g] 7g;53s
       Subfamily Spumaretrovirinae [monotypic]
      Count: [g] 1g;6s
         Genus Spumavirus - foamy viruses
        Count: 6s
           Equine foamy virus
          Count: -