Stains
Cytokeratin 5 (CK5, K5)



Topic Completed: 1 October 2013

Revised: 27 February 2019

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Cite this page: Pernick N. Cytokeratin 5 (CK5, K5). PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/stainsck5.html. Accessed May 23rd, 2019.
Definition / general
Interpretation
Uses by pathologists
Positive staining - normal
Microscopic (histologic) images

Images hosted on Pathout server:

Contributed by Leica Microsystems, Biosystems Division

Mesothelioma CK5
(XM26) with intense
cytoplasmic and
membranous staining



Images hosted on other servers:

Mesothelioma deciduoid

Squamous cell carcinoma-oral (fig a)

Benign epithelial
inclusions of axillary
lymph nodes;
fig 1: CK5/6+; 2: p63+

Additional references
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