Cytokeratin 4 (CK4, K4)

Author: Nat Pernick, M.D.

Revised: 15 May 2018, last major update October 2013

Copyright: (c) 2003-2018,, Inc.

PubMed Search: ck4[title]
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Cite this page: Pernick, N. Cytokeratin 4 (CK4, K4). website. Accessed January 18th, 2019.
Definition / general
Uses by pathologists
  • No significant clinical use by pathologists
Case reports
Positive staining - normal
  • Suprabasal cells of nonkeratinized stratified squamous epithelium of esophagus and cornea; also anus, larynx, pharynx, tongue (J Biol Chem 1998;273:23912)
Additional references