. . . . . . . . . . . . "[Recently, elevated levels of cytokeratin 19-fragments (Cyfra 21-1) have been detected in the serum of patients with lung cancer, in particular with squamous cell carcinoma.]. 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 . "2016-05-13T12:51:56+02:00"^^ . . . . . . . . . . . "v4.0.0.0" . "v4.0.0" .