CD Markers

Author: Nat Pernick, M.D. (see Authors page)

Revised: 30 December 2015, last major update September 2013

Copyright: (c) 2003-2015,, Inc.

PubMed Search: CD93[title]
Cite this page: CD93. website. Accessed October 24th, 2016.
Definition / General
  • Also called complement component C1q receptor, C1qR
  • No longer believed to be part of receptor complex for C1q (J Immunol 2002;168:5222)
  • Enhances phagocytosis in monocytes and macrophages upon interaction with soluble defense collagens
  • Also enhances phagocytosis via mannan-binding lectin, an important part of the innate immune defense (J Biol Chem 2001;276:43087)
  • Receptor for pulmonary surfactant protein A
  • Has role in intercellular adhesion
  • Soluble form present in plasma (J Immunol 2005;175:1239)
Uses by Pathologists
  • No significant clinical use by pathologists
Micro Images

Images hosted on other servers:

Various images

Liver (figure 6B)

Positive Staining - Normal
Negative Staining
  • Lymphocytes
Additional References