Causative agent for rheumatoid ahritis is:: (A) Mycoplasma, (B) Mycobacaterium avium, (C) Yersinia, (D) Herpes virus
Answer is A. Answer is A (Mycoplasma) The true causative agent for Rheumatoid ahritis is not known. Mycoplasma has been suggested as a possible causative agent, and hence is the single best answer of choice