IgM*IgM antibodies activate the complement and clump cells. IgG antibodies bind to pathogens, activate the compliment and enhance phagocytosis. IgA antibodies prevent pathogens from attaching to epithelial cells in the digestive and respiratory tract. IgD antibodies signify the readiness of the B cells. IgE antibodies are responsible for the immediate allergic response and protection against parasitic worms.Section: 07.03