adhesion phenomenon

ad·he·sion phe·nom·e·non

a phenomenon manifested by the adherence of antigen-antibody-complement complex to "indicator cells" (microorganisms, platelets, leukocytes, or erythrocytes), the reaction being sensitive and specific for the antigen and antibody in the complex. Synonym(s): erythrocyte adherence phenomenon, immune adherence phenomenon, red cell adherence phenomenon