. . . . . . . . . . . . "[The increase in opioidergic tone by the central administration of morphine, which binds to the mu opioid receptor, is associated with pruritus.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2014-02-25"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2014-10-02T12:37:57+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .