The chief responsibility of the helper T cells is to rouse the other defender cells into motion. They interpret intelligence information and communicate with all other lymphocytes through numerous specific chemical messengers. It is important to understand that one line of communication is directed to the B cells. But , unlike the T cells, which are always on active duty, moving throughout the entire blood and lymphatic routes on surveillance missions, B cells do much less traveling and rest inactive in the lymph system until the T cell calls them to the site of attack. When the helper T cells recognize a virus, bacteria, etc.
Antibodies then help to destroy the invader.
Helper T cells are long-lived and many become memory cells. Whenever they spot a future exposure to the same agent, they'll initiate an even faster and more vigorous immune response. Only a few of the B cells will become memory cells. Suppressor T Cells keep B cells in check by inhibiting their antibody production in order to prevent over- production. Suppressor T cells also accomplish this goal by direct suppression of helper T cells.