Table 1.

Antibodies used in the study

Antibodies	Source	Clonality	Dilution
Epithelial membrane antigen	DAKO Cytomation, Glostrup, Denmark	M	1:100
Cytokeratin (AE1/AE3)	DAKO Cytomation, Glostrup, Denmark	M	1:100
Cytokeratin (CAM5.2)	Becton Dickinson, San Jose, CA, USA	M	1:1
Cytokeratin 18	DAKO Cytomation, Glostrup, Denmark	M	1:20
Vimentin	DAKO Cytomation, Glostrup, Denmark	M	1:100
S-100 protein	Nichirei, Tokyo, Japan	P	1:200

M, monoclonal; P, polyclonal