The complement system is a part of the immune system that enhances (complements) the ability of antibodies and phagocytic cells to clear microbes and damaged cells from an organism, promotes ...

Immunotherapy is a type of cancer treatment that uses the body's own immune system to fight tumor cells. While much focus has been on engaging T-cells for fighting cancer, less attention has been ...

A new study may have found what’s behind long COVID symptoms. Scientists say a portion of the immune system may stay activated after someone recovers from the virus. Research into what causes long ...