histiocyte
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Related to histiocyte: Langerhans cell
histiocyte
[his´te-o-sīt″]macrophage. adj., adj histiocyt´ic.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
his·ti·o·cyte
(his'tē-ō-sīt'),A tissue macrophage; the class includes hepatic Kupffer cells, alveolar macrophages, giant cells of granulomas, osteoclasts, and dermal Langerhans cells. These cells derive from precursors that normally reside in bone marrow but migrate through the bloodstream to egress into tissues for final differentiation.
Synonym(s): histocyte
[histio- + G. kytos, cell]
Farlex Partner Medical Dictionary © Farlex 2012
histiocyte
(hĭs′tē-ə-sīt′)n.
A macrophage or dendritic cell that is usually immobile and is found in organs and tissues.
his′ti·o·cyt′ic (-sĭt′ĭk) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
macrophage
A nonspecific immune defence cell that interacts with proteins and polysaccharide antigens, internalising and partially degrading them, and/or presenting the antigens to T cells in a major histocompatibility complex (MHC) context. Macrophages are involved in secretion, immune interaction with T and B cells and provide lymphokine receptors; once activated, macrophages are highly microbicidal and tumouricidal, often closely associated with the blood vessels, epithelium and mesothelium, which are appropriate sites for non-specific immunocytes.Morphology
Large (15–80 µm in diameter), often with bleb-like or filiform pseudopodia; one (or rarely more) round to oval, occasionally indented nucleus; nuclear membrane is distinct; nuclear chromatin is fine with a reticular pattern; abundant, pale grey-blue, often granulated (coarse azurophilic granules) and vacuolated cytoplasm with phagocytosed material (RBCs, WBCs, platelets, nuclei, bacteria and remnants in native or degraded form).
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.
his·ti·o·cyte
(his'tē-ō-sīt)A macrophage present in connective tissue.
Synonym(s): histocyte.
Synonym(s): histocyte.
[histio- + G. kytos, cell]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
histiocyte
A fixed scavenging cell (phagocyte) found in connective tissue. Histiocytes are also known as reticuloendothelial cells and reticulum cells. A macrophage that does not migrate.Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005
his·ti·o·cyte
(his'tē-ō-sīt)A macrophage in connective tissue.
[histio- + G. kytos, cell]
Medical Dictionary for the Dental Professions © Farlex 2012