TOPICS: Antigen, second antigen exposure, Type I hypersensitivity reaction, Type II hypersensitivity reaction, Type III hypersensitivity reaction, Type IV hypersensitivity reaction, IgE, ELISA test, direct Coombs test, indirect Coombs test, serum sickness, serum sickness-like reaction, antibodies, contact dermatitis, purified protein derivative (PPD) test, transplant rejection, post-streptococcal glomerulonephritis, infliximab, penicillin, transfusion reactions (ABO incompatibility), hemolytic disease of the newborn, Graves’ disease, asthma, anaphylaxis, allergies, allergy test, mast cell degranulation, tryptase, histamine, atopy, leukotrienes, chemokines, opsonization, complement activation, natural killer (NK) cell-mediated apoptosis, immune complex, inflammation, neutrophil chemotaxis, Arthus reaction, IgG, delayed-type hypersensitivity, lysosomal enzymes, immune complex deposition, T cell mediated hypersensitivity, cytokine release, perforin, granzyme, phagocytosis, oxygen independent killing, antigen presentation, phagosome, lysosome, phagolysosome, CCR5, C3b, T cell activation, CD28, B7 (CD80/86), LPS, CD40, CD14, CD40L, Fc receptor, TNF, IL-1, IL-6, IL-8, IL-12, Fas, FasL
