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

(biology) Any antiparasite defence mounted for the benefit of individuals other than the actor.

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

(law, US) A doctrine protecting some government officials from suit if no prior court decision had declared similar conduct to be actionable, or if they acted in good faith.