blocking antibody


noun

Immunology. an antibody that partly combines with an antigen and interferes with cell-mediated immunity, thereby preventing an allergic reaction.
Also called blocking factor.

Medical definitions for blocking antibody

blocking antibody

n.

An antibody that combines with an antigen without a reaction but that blocks another antibody from later combining with that antigen.
An immunoglobulin that combines specifically with an atopic allergen but does not elicit an allergic reaction.