These viruses are all still considered " HIV" but behave slightly differently from each other and target different cells in the host, in fact that host cell preference is called viral tropism.

这些病毒都可看作是HIV，但互相之间又略有不同，攻击宿主的不同细胞；这种宿主细胞偏好称之为病毒亲嗜性。