sentences: an autoimmune disease is when the body attacks its own tissues
docs: autoimmune_disease is illness. autoimmunity is pathology. lupus_erythematosus is autoimmune_disease. inflammatory_bowel_disease is autoimmune_disease. autoimmune_disease is disease. type_i_diabetes is autoimmune_disease. psoriasis is autoimmune_disease. autoimmunity is disease. lupus is autoimmune_disease.