Carcinoembryonic antigen, an apical membrane glycoprotein expressed in normal human colonie epithelial cells, colonie polyps, tumor, and tissue culture cell lines originating from colonie adenocarcinomas, is generally considered to have a molecular weight of 180,000. Using sodium dodecyl sulfate-polyacrylamide gel electrophoresis associated with immunoprecipitation or immunoblotting with both m...
