The cells that produce antibodies are ( ) A. phagocytes B. plasma cells C. T cells D. target cells

A. Phagocytes can phagocytose, process and present antigens, but cannot produce antibodies, A is wrong;

B. Plasma cells can synthesize and secrete antibodies, B is correct;

C. T-cells can secrete lymphokines, but can not produce antibodies, C is wrong;

D. The target cell is the cell invaded by the antigen, can not produce antibodies, D is wrong.

Therefore: B.