. . . . . . . . . . . . "[The distribution of DRB1 and DPB1 alleles in 33 seronegative, 20 weakly seropositive, 79 distinctly seropositive patients with RA, and in 181 healthy controls was determined by genomic typing: IgM rheumatoid factor (RF) seronegativity was ascertained in Waalers' latex, and ELISA tests.]. 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 . "2014-10-02T12:33:55+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .