Antigen + TH Antibody Secretion
As represented in the model above, B cells are activated by direct contact with antigens or stimulated
helper T cells (TH). Based on the model, which of the following best describes an outcome of B cell
activation?
a. Activated B cells differentiate into plasma cells and memory cells.
b. Activated B cells stimulate TH cells to secrete antibodies.
Plasma cells produce antibodies that activate additional B cells by a positive feedback
mechanism.
.. Both B cells and TH cells release chemical signals that negatively regulate
antigen-presenting cells.