CD Markers

Topic Completed: 1 November 2014

Revised: 14 December 2018, last major update November 2014

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

PubMed Search: CD66

Related topics: CD66b, CD66c, CD66d, CD66e / CEA, CD66f

Nat Pernick, M.D.
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Cite this page: Pernick N. CD66. website. Accessed July 19th, 2019.
Definition / general
Uses by pathologists
Microscopic (histologic) images

Images hosted on other servers:


Expression at maternal-fetal surface

Various breast lesions (Figure 1)

Positive staining - normal
  • Granulocytes, lymphocytes, epithelial cells, endothelial cells, prostate glands and ducts (dense), bile canaliculi between liver cells, extravillous trophoblast (Am J Pathol 2000;156:1165)
Positive staining - disease
  • Low grade prostate carcinoma
Negative staining
  • High grade (Gleason 4/5) prostate carcinoma
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