Determination of serum retinol in cancer studies.
D005470:Fluorometry; D006801:Humans; D009369:Neoplasms / Q000097:blood*; D012177:Retinol-Binding Proteins / Q000378:metabolism; D014801:Vitamin A / Q000097:blood*
D012177:Retinol-Binding Proteins; D014801:Vitamin A