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OBJECTIVE To assess the significance of autoantibodies to RA33, the A2 protein of the heterogeneous nuclear ribonucleoproteins (hnRNP), and to the related hnRNP proteins A1, B1, and B2 in rheumatic(More)
OBJECTIVE To compare folic acid (FA) levels in patients being treated with methotrexate (MTX) with those of untreated patients in order to investigate potential folate depletion by MTX and its(More)
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