Amebocyte

Amebocyte

An amebocyte or amoebocyte is a mobile cell (moving like an amoeba) in the body of invertebrates such as echinoderms, mollusks or sponges. Similar to some of the white blood cells of vertebrates, in many species amebocytes are found in the blood or body fluid and play a role in the defense of the organism against pathogens.

Limulus amebocyte lysate, an aequous extract of amebocytes from the horseshoe crab ("Limulus polyphemus"), is commonly used in a test to detect bacterial endotoxins.

In sponges, amebocytes or archaeocytes are cells found in the mesohyl that can transform into any of the animal's more specialized cell types.

In old literature, the term "amebocyte" is sometimes used as a synonym of "phagocyte".


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  • amebocyte — [ə mē′bō sīt΄, ə mē′bəsīt΄] n. any cell capable of moving like an amoeba, esp. one that floats freely in the blood or other body fluids, such as a white blood corpuscle …   English World dictionary

  • amebocyte — variant of amoebocyte …   New Collegiate Dictionary

  • amebocyte — /euh mee beuh suyt /, n. Zool. a migratory, ameboid cell found in many invertebrates that functions in excretion, assimilation, etc. Also, amoebocyte. [AMEB(A) + O + CYTE] * * * …   Universalium

  • amebocyte — 1. A wandering cell found in invertebrates. 2. Obsolete term for leukocyte. 3. An in vitro tissue culture leukocyte. [ameba, + kytos, cell] * * * ame·bo·cyte or chiefly Brit amoe·bo·cyte ə mē bə .sīt …   Medical dictionary

  • amebocyte — n. type of cell found in invertebrates (Zoology) …   English contemporary dictionary

  • amebocyte — a•me•bo•cyte [[t]əˈmi bəˌsaɪt[/t]] n. cbl a cell that has properties resembling those of an ameba • Etymology: 1890–95 …   From formal English to slang

  • amebocyte — variant of amoebocyte * * * /euh mee beuh suyt /, n. Zool. a migratory, ameboid cell found in many invertebrates that functions in excretion, assimilation, etc. Also, amoebocyte. [AMEB(A) + O + CYTE] …   Useful english dictionary

  • Limulus amebocyte lysate — (LAL) is an aqueous extract of blood cells (amoebocytes) from the horseshoe crab, Limulus polyphemus . LAL reacts with bacterial endotoxin or lipopolysaccharide (LPS), which is a membrane component of Gram negative bacteria. This reaction is the… …   Wikipedia

  • Horseshoe crab — Taxobox name = Horseshoe crab status = LR/nt | status system = IUCN2.3 status ref = [IUCN2006|assessors=World Conservation Monitoring Centre|year=1996|id=11987|title=Limulus polyphemus|downloaded=11 May 2006 ] image width = 200px image caption =… …   Wikipedia

  • a|moe|bo|cyte — «uh MEE buh syt», noun. = amebocyte. (Cf. ↑amebocyte) …   Useful english dictionary

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