What Cell Types are Required for a Normal Immune Response

Question

What cell types are required for a normal immune response to occur?
A) Macrophages only
B) T cells only
C) B cells only
D) Both T and B cells

Accepted Answer

For a normal immune response to occur, both T cells and B cells are required. T cells help in recognizing antigens and can kill infected cells directly or help other cells to do so, while B cells produce antibodies that target pathogens for destruction.