Upon recognition, T helper cells secrete cytokines, which induce proliferation of specific T and B cells and interfere with replication. B Cells and the Humoral Response Part of the adaptive immune system. Have very specific receptors, but they are not limited to protein antigens. Very stringent developmental requirements like T cells. Upon recognition, some develop into plasma cells.
Plasma cells specialize in mass production of antibodies.
Humoral memory is maintained by persistence of antigen specific antibodies in the blood.