. . . . . . . . . . . . "[Allotyping of the major histocompatibility complex (MHC)-linked complement component C4 has revealed a strong association of the null allele, C4A*Q0, with systemic sclerosis (SSc).]. 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 . "2014-10-02T12:36:46+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .