A) have unique light chains.
B) are Y-shaped molecules.
C) are present in the plasma.
D) are connected with J chains and short polypeptides to form dimers.
E) are present in lymph nodes.

A) T lymphocytes produce antibody molecules.
B) T lymphocytes directly attack cells and produce the cell-mediated immune response.
C) T lymphocytes are called such because they mature in the thymus.
D) T lymphocytes have TCRs that recognize antigen only if it is bound to MHC.
E) There are three types of T lymphocytes.

A) the bone marrow
B) the spleen
C) the liver
D) both the bone marrow and the spleen
E) the thymus