. . . . . . . . . . . . "[In the properdin factor B (Bf) system the S phenotype was found to be significantly increased in male patients and in patients with a family history of polyarthritis, a more severe form of RA and high titres of rheumatoid factor.]. Sentence from MEDLINE/PubMed, a database of the U.S. National Library of Medicine."@en . . . . . "2016-02-19"^^ . . "Gene-disease associations inferred from text-mining the literature."@en . "DisGeNET evidence - LITERATURE"@en . "2016-05-13T12:51:36+02:00"^^ . . . . . . . . . . . "v4.0.0.0" . "v4.0.0" .