試題詳解

45. To infect a cell, HIV must
(A) kill cytotoxic T cells and bind CD4.
(B)bind both CD8 and a cytokine co-receptor.
(C)bind both CD8 and a class I MHC protein.
(D)bind both CD4 and a cytokine co-receptor.
(E) bind CD4 and kill macrophage.