Final answer:
True. Cytokines from proliferated T cells indeed stimulate B cell antibody switching, which is a true statement. This process leads to the production of different classes of antibodies through class switching.
Step-by-step explanation:
The statement is true: B cell antibody switching is stimulated by cytokines generated by T cells that have multiplied. Class switching occurs when activated TH2 cells secrete these cytokines, which help B cells differentiate into plasma cells that make distinct classes of antibodies. Through a genetic rearrangement process, multiple antibody classes with the same epitope specificity can be produced by plasma cells cloned from an activated B cell. This aids in the immune system's ability to develop a more potent defense against infections that the body might come into contact with in the future.