Abstract The International Committee for the Taxonomy and Nomenclature of Viruses does
not rule on virus classifications below the species level. The definition of species for viruses …

The human immunodeficiency viruses (HIV-1 and-2) together with the simian
immunodeficiency viruses (SIV) comprise the primate lentivirus family. Since the isolation of …

Simian immunodeficiency viruses (SIV) and the closely related human immunodeficiency
viruses (HIV-1 and HIV-2) belong to the lentivirus subfamily of retroviruses. SIVs are a large …

Lentiviruses are one of several groups of retroviruses. In early studies of the molecular
phylogenetic analysis of endogenous and exogenous retroviruses it was suggested that the …

Molecular evolutionary analyses strongly support the hypothesis that human
immunodeficiency viruses have recently arisen from a diverse pool of nonhuman primate …

The phylogenetic complexity of the primate lentiviruses is legendary and our understanding
of its scope was dramatically increased recently by the discovery of a new branch of the HIV …

Studies of primate lentivirus phylogeny over the past decade have established a minimum of
five related, but genetically distinct, groups of simian immunodeficiency virus (SIV), each …

The human immunodeficiency viruses. HIV-l and HIV-2. are members of a group of closely
related viruses found in a number of different African primate species. More distantly related …

Abstract HIV type 1 (HIV-1) and type 2 (HIV-2) are the result of several cross-species
transmissions from primates to humans. Recently, the ancestral strains of HIV-1 groups M …

It has been more than a decade since the description of primate lentiviruses as the
etiological agents for immunodeficiencies (BARRE-SINOUSSI et al. 1983; GALLO et al …