title: Lung cancer and circulating DNA.
mesh_terms: D000328:Adult; D000368:Aged; D004273:DNA, Neoplasm / Q000097:blood*; D005260:Female; D006801:Humans; D008175:Lung Neoplasms / Q000097:blood*; D008297:Male; D008875:Middle Aged
chemical_list: D004273:DNA, Neoplasm