(immunology) The body's integrated response to an antigen, mediated by lymphocytes.

(anatomy, immunology) The system that differentiates self from non-self and protects the body from foreign substances and pathogenic organisms by producing an immune response. It includes organs such as the thymus, the spleen and lymph nodes; tissue such as bone marrow, and lymphoid tissues such as the tonsils; cells such as lymphocytes including the B cells and T cells, and cell products such as antibodies.

All the changes in a tissue that result from the action of a foreign substance introduced into an organism

Describing a condition where the immune system reacts to the body itself.

plural of immune complex

(biochemistry, immunology) A molecule formed from the integral binding of an antibody to a soluble antigen; an antigen-antibody complex.

The evasion, by a pathogen, of a host's immune system

plural of immune evasion

Alternative form of immunodeficiency

(medicine, usually of vasculitis) Associated with minimal aetiological evidence of hypersensitivity upon IgG immunofluorescence staining.