Autoimmune Diseases Type I-Due to antibodies against pathogens Type ll-Antibodies react with cell-surface antigens Type Ill (Immune Complex)-IgM,IgG,complement immune complexes deposit in tissues ·Type IV一Mediated by T cells• Type I — Due to antibodies against pathogens • Type II — Antibodies react with cell-surface antigens • Type III (Immune Complex) — IgM, IgG, complement immune complexes deposit in tissues • Type IV — Mediated by T cells Autoimmune Diseases