APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -Classification and Antigenic Types. HIV is classified as a retrovirus because it contains reverse transcriptase. It is a D-type virus in the Lentivirus family. Infection of cultured T4 cells with HIV usually results in cell death.

Detailed explanation-2: -Besides human immunodeficiency virus (HIV), the virus that causes AIDS, there a two other retroviruses that can cause human illness. One is called human T-lymphotropic virus type 1 (HTLV-1) and the other is called human T-lymphotropic virus type 2 (HTLV-II).

Detailed explanation-3: -The human immunodeficiency virus (HIV) is grouped to the genus Lentivirus within the family of Retroviridae, subfamily Orthoretrovirinae [1]. On the basis of genetic characteristics and differences in the viral antigens, HIV is classified into the types 1 and 2 (HIV-1, HIV-2).

Detailed explanation-4: -The host’s normal transcription machinery transcribes HIV DNA into multiple copies of new HIV RNA. Some of this RNA becomes the genome of a new virus, while the cell uses other copies of the RNA to make new HIV proteins.