Screening with gastric CEA.
D002272:Carcinoembryonic Antigen / Q000032:analysis*; D005069:Evaluation Studies as Topic; D005770:Gastrointestinal Neoplasms / Q000175:diagnosis*; D006801:Humans; D008403:Mass Screening; D011863:Radioimmunoassay
D002272:Carcinoembryonic Antigen