immune system modulator
(ih-MYOON SIS-tem MAH-juh-lay-ter)
A substance that stimulates or suppresses the immune system and may help the body fight cancer, infection, or other diseases. Specific immune system modulators, such as monoclonal antibodies, cytokines, and vaccines, affect specific parts of the immune system. Nonspecific immune system modulators, such as BCG and levamisole, affect the immune system in a general way. Also called immunomodulating agent.