large phagocyte

process by which an organism produces a copy of itself—for example, the way microbes reproduce.

vaccines

usually long-lasting immunity that is acquired through the production of antibodies

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

an enzyme found in mammalian tissues that is capable of catalyzing the process in which adenosine is split into inosine and ammonia. A deficiency can cause problems with metabolic reactions in cells, which leads to the destruction of B

a misguided reaction by the immune system to harmless foreign substances.

a protein on the surface of B cells

a foreign substance (usually a protein or carbohydrate) capable of triggering an immune response in an organism.

drugs that act against retroviruses