Letter: Comparison of plasma carcinoembryonic antigen and alpha-fetoprotein in various tumours.
D002272:Carcinoembryonic Antigen / Q000032:analysis*; D005326:Fetal Proteins / Q000032:analysis*; D006801:Humans; D009369:Neoplasms / Q000097:blood* / Q000276:immunology; D000509:alpha-Fetoproteins / Q000032:analysis*
D002272:Carcinoembryonic Antigen; D005326:Fetal Proteins; D000509:alpha-Fetoproteins