How do white blood cells prevent, not fight, disease?

“B cells” and “Memory B cells” are types of white blood cells that provide future immunity against invasion by the same antigen.

“B cells” and “Memory B cells” are types of white blood cells that provide future immunity against invasion by the same antigen. “T cells” and “Memory T cells” work similarly.

Although they play quite different roles, produced by both B cells and T cells include the same three fundamental steps.