40.Which immune cell is the primary target of human immunodeficiency virus (HIV) infection, leading to immune system collapse?
(A) Cytotoxic T cells;
(B) Helper T cells;
(C) Regulatory T cells;
(D) Plasma cells.
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統計: A(1), B(3), C(2), D(2), E(0) #3577769
統計: A(1), B(3), C(2), D(2), E(0) #3577769