. . . . . . . . . . . . "[Because fragile sites have a higher expression with advancing age, cigarette smoking, and deficiency of folic acid and B12 vitamins, they may represent active genomic sites that are vulnerable to physiological and environmental disturbance.]. 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 . "2014-10-02T12:36:45+02:00"^^ . . . . . . . . . . . "v2.1.0.0" . "v2.1.0" .