What is the protein Lymphocytes Secrete?

Lymphocytes primarily secrete antibodies, which are proteins that play a crucial role in the immune response by identifying and neutralizing pathogens like bacteria and viruses. Specifically, B lymphocytes (or B cells) are responsible for the production of antibodies, while T lymphocytes (or T cells) release signaling proteins called cytokines that help regulate immune responses. These proteins are essential for coordinating the body's defense mechanisms against infections and disease.