A virus may be knowned as a simian (immunodeficiency virus).
A virus may contain components of simian (immunodeficiency virus).
A retrovirus may cause acquired (immunodeficiency syndrome).
Basic research can be on a pathogenesis of human (immunodeficiency virus).
A longitudinal study may evaluate properties of human (immunodeficiency virus).
Perinatal transmission can be constituted-of-or-filled-with human (immunodeficiency virus).