CD Markers

Topic Completed: 1 February 2002

Revised: 18 December 2018, last major update February 2002

Copyright: (c) 2002-2016,, Inc.

PubMed Search: CD226 or DNAM-1 or Platelet and T cell Activation antigen 1 (PTA1)

Nat Pernick, M.D.
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Cite this page: Pernick N. CD226. website. Accessed July 10th, 2020.
Definition / general
  • Aka DNAM-1, Platelet and T cell Activation antigen 1 (PTA1)
  • Mediates adhesion to an unknown ligand
  • T cell expression increased in some patients with autoimmune disease and viral infection
Positive staining - normal
  • NK cells, platelets, monocytes, subset of B and T cells
Negative staining
  • Granulocytes, erythrocytes
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