Which of the following is the best definition of autoimmune disease?
A. a condition in which B cells and T cells respond independently to antigens and do not interact correctly
B. a condition in which the adaptive immune system fails to recognize the second infection by the same antigen
C. a condition in which the immune system creates random antibodies without being triggered by an antigen
D. a condition in which self molecules are treated as non-self
Answer:
D. a condition in which self molecules are treated as non-self