effector molecules that act to remove antigen b ren various mechanisms described in previous chap es antigen without A Second Exposure to Poison Oak May Result in Delayed-Type Hypersensitivity Gell and Coombs Classification IgE-Mediated (Type I) Hypersensitivity Antibody-Mediated Cytotoxic(Type) Hypersensitivity aImmune Complex-Mediated (Type Ill) Hypersensitivity