Helper T-cells are primarily involved in ?: (A) Cell mediated immunity, (B) Killing virus infected cells, (C) Killing tumor cells, (D) Involved in type II hypersensitivity
Answer is A. Ans. is 'a' i.e., Cell mediated immunity The main types of B cells are plasma cells, plasmablasts, memory B cells, and regulatory B cells. T cells are involved in cell-mediated immunity, whereas B cells are primarily responsible for humoral ( antibody -related) immunity.