Helper T cells (CD4+ T cells) play a crucial role in the immune response by activating B cells and other immune cells. When they recognize an antigen presented by antigen-presenting cells, they release cytokines that stimulate B cells to proliferate and differentiate into plasma cells. These plasma cells then produce antibodies specific to the antigen, which neutralize or mark the pathogen for destruction. Together, helper T cells and B cells coordinate an effective immune response to eliminate the antigen from the body.
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