Lymphocytes Play an Important Role in Fighting Infection and Disease

Lymphocytes play an important role in fighting infection and disease by

A) producing antibodies that destroy substances through the antigen-antibody reaction.
B) secreting digesting enzymes that dissolve foreign particles.
C) secreting platelets that engulf foreign particles so they may be excreted.
D) producing monoblasts that increase the amount of hemoglobin in the blood.
E) carrying oxygen and carbon dioxide throughout the body.