A 67 year nude smoker presents with haemoptysis and cough. Bronchoscopic biopsy revealed un-differentiated tumour. The immunohistochemical marker that can be most helpful is-
TEXT BOOK OF PATHOLOGY HARSHMOHAN 6TH EDITION PG NO 16 Epithelial tumors are stained by pankeratin or cytokeratin (high or low MW) <\p>
Calretinin
Vimentin
Cytokeratin
GGt
General pathology