Definition of HTLV-I
HTLV-I: Human T-lymphotropic virus type I, often referred to simply as the human T-lymphotropic virus (HTLV).
HTLV-II stands for human T-lymphotropic virus type II, which is closely related to HTLV-I.
HTLV-III is now known as the human immunodeficiency virus or HIV.Source: MedTerms™ Medical Dictionary
Last Editorial Review: 6/14/2012