<prompt> All are true about autoimmune disease except:T cells recognize self - antigenHashimotos thyroiditis is an exampleHigher incidenc among malesPolyclonal B cell activation  <response>: Ans. is c i.e., Higher incidence among malesRef: Ananthanarayan, 9the, p. 178 - 182 and 8the, p. 171 - 175; Harrison, 17the, p. 2071 - 74 Autoimmune diseases are syndromes caused by activation of T and B cells or both. Costimulatory molecules such as B7 - 1 or B7 - 2 are involved in autoimmunity. Higher incidence is seen in females. 