A student states, "It seems like helper T cells do a lot more than just 'help' the cellular immunity process". Which response listed below best conveys an aspect of the role of CD4 helper T cells in immunity?
a. Helper T cells are key to the hematopoiesis that produces all the components of the immune system.
b. Without helper T cells, the wrong antibiotics would end up being produced.
c. Without helper T cells, no antigens would be presented
d. Helper T cells play a major role in stimulating and regulating the whole process.