But the B Lymphocytes are part of the humoral immunity of our adaptive system while our T Lymphocytes and our helper T cells are part of the cell mediated immunity. So we see that the humoral immunity and the cell mediated immunity interact with one another to carry out the same exact function, to basically kill off these pathogens and kill off the infected cells of our body. So once we activate that helper T cell, it basically goes on and finds a B Lymphocyte that contains the MHC class two, class two complex along with that same antigen that was found on this macrophage. And they also bind and they also form a complex. And once they form a complex, these two cells begin to release these special chemicals known as cytokines. And what these cytokines do is they basically induce this T cell, the helper T cell, to begin to clone itself via the process of mitosis.