All
 B04 Viruses D014780 +
 B04.820 RNA Viruses D012328 +
 B04.820.650 Retroviridae D012190 +
 B04.820.650.200 Deltaretrovirus D017977 +
 B04.820.650.200.730 Primate T-lymphotropic virus 2 D030263 +
 B04.820.650.200.730.404 Human T-lymphotropic virus 2 D015367