Table 1.

Antibodies employed

Antigen	Antibody/clone	Isotype	Dilution	Source
E-cadherin	HECD-1	Mouse IgG1	1:80	Merck, Darmstadt, Germany
β-catenin	polyclonal	Rabbit IgG	1:100	Diagnostic BioSystems, Pleasanton, CA, USA
MUC1	mPankoMab	Mouse IgG1	1:550	Glycotope, Berlin, Germany