ANA:Antinuclear antibody, an unusualantibodydirected against structures within thenucleusof thecell. ANAs are foundinpatients whoseimmune systemis predisposed to causeinflammationagainst their own body tissues. Antibodies that are directed against one's own tissues are referred to as autoantibodies. The propensity for theimmunesystem to work against its own body is referred to asautoimmunity. ANAsindicate可能存在自身免疫。
