. . . . . . . . . . . . "[Effects of leucine-enkephalin (leu-ENK), methionine-enkephalin (met-ENK), and beta-endorphin (END) on proinflammatory cytokine and matrix metalloproteinase (MMP) production by RA synovial cells were analyzed by immunoblotting, and their mRNA expression by reverse transcription-polymerase chain reaction (RT-PCR) using limiting dilution of complementary DNA.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2015-02-27"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2015-08-25T14:43:59+02:00"^^ . . . . . . . . . . . "v3.0.0.0" . "v3.0.0" .