Anti Ul-RNP antibody is seen in?: (A) SLE, (B) Scleroderma, (C) MCTD, (D) Derniatomyositis
Answer is C. Ans. is 'c' i.e., MCTDo Mixed connective tissue disease (MCTD) is characterized serologically by high titers of antibodies to ribonucleoprotein paicle-containing Ul ribonucleoprotein (Anti-Ul RNP)