Simian-T-lymphotropic viruses, also Simian T-cell leukemia viruses (STLVs), are retroviruses closely related to the human sexually and breastfeeding transmissible viruses HTLV. They have subtypes 1 thru 4 as compared to HTLV 1 thru 4, each subtype have their own serovars. Together they comprise PTLVs (Primate T-lymphotropic viruses) A study has sh...