Amoeba

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Amoeba

 [ah-me´bah]
a genus of ameboid protozoa, most of which are free-living. Those parasitic in humans and once included in this genus have been assigned to other genera.

Amoeba

(ă-mē'bă),
A genus of naked, lobose, pseudopod-forming protozoa of the class Sarcodina (or Rhizopoda), which are abundant soil-dwellers, especially in rich organic debris, and are also commonly found as parasites. The typical amebic parasites of humans are now placed in the genera Entamoeba, Endolimax, and Iodamoeba.
See also: Naegleria.
[Mod. L. fr. G. amoibē change]

Amoeba

/Amoe·ba/ (ah-me´bah) a genus of amebae.

amoeba

also

ameba

(ə-mē′bə)
n. pl. amoe·bas or amoe·bae (-bē)
Any of various one-celled free-living or parasitic protozoans having no definite form and moving by means of pseudopods.

a·moe′bic (-bĭk) adj.

amoeba

See ameba.

Amoeba

(1) A genus of amoebas of the order Amoebida.
(2) An imprecise name for several types of free-living unicellular phagocytic organisms; the pathogenic amoebas have been reclassified as Entamoeba spp, Endolimax spp, and others
Giant forms (eg. Amoeba proteus may be up to 2 mm long and crawl over surfaces by protruding pseudopods). Amoebae exhibit great plasticity of form and conspicuous cytoplasmic streaming.

Amoeba

Parasitology A genus of amebas of the order Amoebida

amoeba

Ameba An imprecise name for several types of free living unicellular phagocytic organisms; the pathogenic amebas have been reclassified as Entamoeba spp, Endolimax spp, and others

A·moe·ba

(ă-mē'bă)
A genus of naked, lobose, pseudopod-forming protozoa of the class Sarcodina (or Rhizopoda), which are abundant soil-dwellers, especially in rich organic debris, and are also commonly found as parasites. The typical amebic parasites in humans are placed in the genera Entamoeba,Endolimax, and Iodamoeba.
[Mod. L. fr. G. amoibē change]

amoeba

A single-celled microscopic organism of indefinite shape commonly found in water, damp soil and as parasites of other animals. Some amoebae, such as Entamoeba histolytica and Acanthamoeba castellani cause disease in man, respectively AMOEBIC DYSENTERY and acanthamoebic keratitis.
Amoebaclick for a larger image
Fig. 31 Amoeba . General structure.

Amoeba

a genus of unicellular PROTOZOANS in the class Rhizopoda. Amoebae are characterized by their changing shape brought about by the projection of PSEUDOPODIA which have a locomotory function. Amoeba is often wrongly quoted as an example of a primitive organism, low on the evolutionary scale. However, as in many PROTISTA, functions that are carried out by organ systems in so-called ‘higher’ forms are here carried out within a single cell, therefore they cannot be considered ‘primitive’; they are highly evolved over millions of years, albeit on a different scale from higher organisms.

Amoeba

A type of protozoa (one-celled animal) that can move or change its shape by extending projections of its cytoplasm.
Mentioned in: Stool O & P Test

A·moe·ba

(ă-mē'bă)
A genus of naked, lobose, pseudopod-forming protozoa of the class Sarcodina (or Rhizopoda), which are abundant soil-dwellers, especially in rich organic debris, and are also commonly found as parasites. The typical amebic parasites in humans are placed in the genera Entamoeba, Endolimax, and Iodamoeba.
[Mod. L. fr. G. amoibē change]

amoeba (əmē´bə),

n a Rhizopod protozoa that uses extensions of its cytoplasm, called pseudopodia, to move. Some varieties of amoebae are implicated in human infection. Also spelled
ameba(s).

Amoeba

a genus of the subphylum Sarcodina. It is a single-celled mass of protoplasm which changes shape by extending cytoplasmic processes called pseudopodia by which it moves about and absorbs nutrients. The majority of amebae are free-living in soil and water. See also amebic.

Patient discussion about Amoeba

Q. is an Amoeba dangerous?? and how can i get rid of it? my son is in Peru, he called and told me he got an Amoeba..i have no idea if it's dangerous or not, and how to get rid of it. and what kinds of food he needs to avoid.I'll appreciate help!

A. oooo...an Amoeba is a nasty one...but not so dangerous! it's a one celled parasite which gets into your body if you eat in restaurants that the cook doesn't wash hands after going to the bathroom..it multiplies in your intestine and makes you diarrhea like hell. but if you'll treat it right it will go away as nothing happened. if you don't it can give you liver cyst. and that's not good. he should see a Dr.

More discussions about Amoeba
References in periodicals archive ?
90,91) Lymphokine production is associated with enhanced macrophage and neutrophil killing of amebae.
mandrillaris amebae was first identified by CDC in 2009 following reports by clinicians in Mississippi of encephalitis among 2 recipients of kidneys from a common donor (11).
The advantage of in situ observation of amebae on the surface on which they were cultivated is that the cell is not disturbed.
Cultured amebae produced flagellates in distilled water at 37[degrees]C within 15-30 min.
Hospital water supplies are an important reservoir of free-living amebae and may represent another mode of acquisition because patients undergoing mechanical ventilation are exposed to aerosolized particles (10).
pneumophila could replicate in amebae and that at temperature <20[degrees]C, amebae digested L.
The occasional observation of amebae in urine specimens in a clinical microbiology laboratory (by L.
contaminated water (free-living amebae may serve as hosts for Parachlamydia spp.
Some mycobacterial species recently were shown to survive within amebae (5).
The book provides a glimpse into the challenges of studying an intracellular pathogen that is found in human macrophages and in amebae.