In mammals, this provides long-lasting protection against specific foreign substances. Helper T cells stimulate plasma B cells to produce antibodies. Memory B cells maintain a ‘memory’ of previous inf [..]

also called the acquired immune system, this component of the immune system comprises white blood cells

the body's infection-fighting defense mechanisms that develops throughout life and is designed to respond to specific antigens; initially requires several days to become protective, and then can both recognize and remember different antigens so that the infection-fighting response is quicker