these findings suggested that there are three modes of immunological tissue damage : hypersensitivity mediated by lymphocytes ( classical delayed hypersensitivity ) , hypersensitivity mediated by circulating antibody ( classical immediate type hypersensitivity ) , and hypersensitivity mediated by macrophages which have passively acquired a factor ( macrophage-mediated hypersensitivity ) .
C0020523
immediate
C0020517
hypersensitivity