Plasma vitamin A in patients with bronchial carcinoma.
D000368:Aged; D001984:Bronchial Neoplasms / Q000097:blood*; D018288:Carcinoma, Small Cell / Q000097:blood; D002294:Carcinoma, Squamous Cell / Q000097:blood; D006801:Humans; D008875:Middle Aged; D014801:Vitamin A / Q000097:blood*
D014801:Vitamin A