TY - RPRT TI - Mechanisms of methotrexate action in rheumatoid arthritis. Selective decrease in synovial collagenase gene expression. AU - G S Firestein AU - M M Paine AU - D L Boyle PY - 1994 DO - 10.1002/art.1780370207 UR - https://pubmed.ncbi.nlm.nih.gov/8129774/ ID - 8129774 ER -