The Nurse Has Held a Unit Conference on the Specific

The nurse has held a unit conference on the specific immune response. Which statement by a colleague indicates an understanding of cell-mediated immune response? "Cell-mediated responses are

A) directed from humorally mediated B cells."
B) the direct attack of activated T-cell lymphocytes."
C) from cells matured in the bone marrow."
D) characterized by antigen-specific immunoglobulins."