CEACAM6 and adenocarcinoma: The highest expression of CEACAM6 in pancreatic tumors was found in moderately- (7.5 ± 0.7) > moderately-poor (5.9 ± 1.9) = well-moderately differentiated (5.8 ± 1.8) > poorly-differentiated tumors (5.1 ± 2.5) > well-differentiated (4.0 ± 0.0) adenocarcinomas (P = NS between the subtypes).