21.anti-Sm(Smith antigen)抗體是下列何種自體免疫疾病的特異性標誌?
(A)rheumatoid arthritis
(B)systemic lupus erythematosus
(C)progressive systemic sclerosis
(D)polymyositis
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統計: A(185), B(1552), C(267), D(171), E(0) #1741122
統計: A(185), B(1552), C(267), D(171), E(0) #1741122