Editing Humoral immunity (section)

=== B cell proliferation ===
The B cell waits for a helper T cell (T<sub>H</sub>) to bind to the complex. This binding will activate the T<sub>H</sub> cell, which then releases [[cytokine]]s that induce B cells to divide rapidly, making thousands of identical clones of the B cell. These daughter cells either become [[plasma cell]]s or [[Memory B cell|memory cells]]. The memory B cells remain inactive here; later, when these memory B cells encounter the same antigen due to reinfection, they divide and form plasma cells. On the other hand, the plasma cells produce a large number of antibodies which are released freely into the [[circulatory system]].