FOCAL TTF-1 POSITIVITY IN A CASE OF CK7/CK20 POSITIVE MERKEL CELL CARCINOMA#290 RESIDENTReddi, Deepti M.DPuri, Puja MDAuthor information1Duke University Medical Center Durham NC U.S.AJournal of Cutaneous Pathology 39(1):p 155, January 2012.Copyright © 2012 Blackwell Publishing Ltd.