The human immunodeficiency virus is composed of the typical viral structures such as genetic material, capsid proteins, and an envelope from its host. Which one or more of the following statements correctly describes some of the characteristics of HIV? a. HIV replicates in T cells and macrophages.
b. HIV is a retrovirus.
c. HIV/AIDS is diagnosed primarily on the basis of immunological and/or nucleic tests without the need for further testing.
d. The majority of AIDS cases worldwide are caused by HIV-1.
e. Direct effects of HIV are responsible for most cases of death from AIDS.