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Topics related to "protozoan"

protozoan
protozoan , informal term for the unicellular heterotrophs of the kingdom Protista . Protozoans comprise a large, diverse assortment of microscopic or near-microscopic organisms that live as single cells or in simple colonies and that show no differentiation into tissues. Formerly classified in the... Read more
Protozoa
Protozoa formerly, the name of an animal phylum comprising a large, diverse assortment of microscopic or near-microscopic one-celled heterotrophic organisms ( protozoans ). The term "protozoan" (or the collective plural "protozoa" ) continues to be used informally; the organisms are now more... Read more
plasmodium
plasmodium name for a stage in the life cycle of a slime mold . Also, Plasmodium is the name given to the genus of the protozoan parasite that causes malaria . ... Read more
Sporozoa
Sporozoa , phylum of unicellular heterotrophic organisms of the kingdom Protista . Unlike most other protozoans , sporozoans have no cilia or flagella. All species are parasitic and have elaborate life cycles, often requiring more than one host. The best-known sporozoan is Plasmodium falciparum, ... Read more
Metazoa
Metazoa , subkingdom of the animal kingdom comprising the multicellular animals in the traditional two-kingdom system of taxonomic classification, in which living organisms were considered to be either plants or animals. Metazoa included all animals except the protozoans, formerly classified as in t... Read more
prostatitis
prostatitis , inflammation of the prostate gland . Acute prostatitis is usually a result of infection in the urinary tract or infection carried by the blood; in many cases the infection spreads from the urethra and is contracted through sexual transmission. Symptoms include fever, low back pain, an... Read more
trichomoniasis
trichomoniasis , sexually transmitted disease caused by the parasitic protozoan Trichomonas vaginalis. In women, it can cause urinary tract infection and a painful, malodorous vaginitis marked by a thin, foamy, irritating discharge. In men, it can infect the urethra and bladder. Most men have no... Read more
Ciliophora
Ciliophora , phylum in the kingdom Protista consisting of the ciliates, or ciliophores, complex freshwater or saltwater protozoans that swim by the coordinated beating of their cilia—short, hairlike structures that cover the cell surface. Like other protozoans, ciliates are unicellular het... Read more
Mastigophora
Mastigophora , phylum of unicellular heterotrophic protozoans of the kingdom Protista . Most of the approximately 1,500 species of Mastigophora are propelled by one or more flagella, and members of the group are sometimes referred to as flagellates. Some have pseudopodia, temporary armlike protrusi... Read more
cyclosis
cyclosis , streaming of cytoplasm within a living cell without deformation of the external cell membrane. In some plant cells there is a rapid rotatory cytoplasmic movement, which is limited to the peripheral parts of the cell next to the cell wall; chloroplasts and granules move in this stream. Thi... Read more

Encyclopedia entries related to "protozoan"

protozoan
Book article from: The Columbia Encyclopedia, Sixth Edition protozoan , informal term for the...of the kingdom Protista . Protozoans comprise a large, diverse...multicellular systems, protozoans carry on all the metabolic...coordination of movement; some protozoans are much more complex in...
Protozoa
Encyclopedia entry from: The Gale Encyclopedia of Science ...20 mm) in diameter. Many protozoans form complex, exquisite shapes...their diminutive size. All protozoans require water, but within...animals — from other protozoans to humans. The protozoan cell is often bounded by a...
Leishmaniasis
Encyclopedia entry from: Gale Encyclopedia of Medicine, 3rd ed. ...by infection with an organism called a protozoan. Description Protozoa are considered...meaning that the infectious agent (the protozoan) is carried by the sandfly and passed on to other animals or humans in whom the protozoan will set up residence and cause disease...
Microorganisms
Encyclopedia entry from: The Gale Encyclopedia of Science ...some algae, some fungi, yeasts, and protozoans. Viruses, bacteria, and blue-green...eukaryotes that includes microscopic protozoans, some fungi, and some algae. Protists...are often, but not always, present. Protozoans are single-celled microorganisms that...
Balantidiasis
Encyclopedia entry from: Gale Encyclopedia of Medicine, 3rd ed. ...a single-celled microorganism (protozoan) called Balantidium coli that infects...by Balantidium coli , a parasitic protozoan that infects the large intestine. B. coli is the largest and only protozoan, having cilia or hair-like structures...
Trichomoniasis
Encyclopedia entry from: Gale Encyclopedia of Medicine, 3rd ed. ...Description Trichomoniasis is caused by a protozoan (the smallest, single-celled members...who have multiple sexual partners. The protozoan is passed to an individual by contact...the trade names Flagyl and MetroGel. Protozoan — A one-celled organism belonging...
Symbiosis
Encyclopedia entry from: The Gale Encyclopedia of Science ...between termites and symbiotic bacteria and protozoans. In the case of the termite Eutermes, protozoans in the gut may account for 60% of the...digesting symbiosis with bacteria and protozoans, as is the case of ruminants such as...
Antiprotozoal Drugs
Encyclopedia entry from: Gale Encyclopedia of Medicine, 3rd ed. ...caused by an ameba, which is a type of protozoan. Fetus — A developing baby...infected with Giardia lamblia , a type of protozoan. Inflammation — Pain, redness...lung infection caused by a parasitic protozoan. The disease mainly affects people with...
Giardiasis
Encyclopedia entry from: Complete Human Diseases and Conditions ...Umblia (je-AR-de-a LAM-bli-a) protozoan, which is a one-celled organism that...by a protective wall, the form of the protozoan during the resting stage of its life...bathroom and before eating. The Giardia protozoan can be filtered from water but is otherwise...
Parasites
Encyclopedia entry from: The Gale Encyclopedia of Science ...vomiting, and weakness, is caused by a protozoan known as Entamoeba histolytica. Another protozoan that causes severe diarrhea, but is also...itself feeds on the host and passes the protozoan on through the bite wound. Some of the...

Dictionary entries related to "protozoan"

protozoan
Book article from: The Oxford Pocket Dictionary of Current English pro·to·zo·an / ˌprōtəˈzōən / • n. ( pl. -zo·a , -zo·ans ) any single-celled microscopic animal of the phylum Protozoa, including amebas and ciliates. • adj. of or relating to protozoa.
protozoa
Book article from: A Dictionary of Biology ...terrestrial habitats; most protozoans are saprotrophs, but some...photosynthesis, like plants. Protozoan cells may be flexible or rigid...vacuoles occur in freshwater protozoans. Reproduction is usually...binary fission , but some protozoans undergo a form of sexual reproduction...
mutualism
Book article from: A Dictionary of Biology ...association between termites and the specialized protozoans that inhabit their guts. The protozoans, unlike the termites, are able to digest...able to use wood as a foodstuff, while the protozoans are supplied with food and a suitable environment...
Mesnil, Félix
Dictionary entry from: Complete Dictionary of Scientific Biography ...crustaceans, enteropneusts, turbellarians, Orthonectida, and protozoans. A great number of investigations were devoted to the annelid...the hematozoon of malaria), Mesnil examined the parasitic protozoans: gregarines, coccidia, Myxosporidia, Microsporidia, infusoria...
trichomoniasis
Book article from: A Dictionary of Nursing ...x103;-sis) n. 1. an infection of the digestive system by the protozoan Trichomonas hominis, causing dysentery. 2. an infection of the vagina due to the protozoan Trichomonas vaginalis, causing inflammation of genital tissues with...
Calkins, Gary Nathan
Dictionary entry from: Complete Dictionary of Scientific Biography ...of biology (1914), but he was best known as a student of protozoan life. He was the author of The Protozoa (1901), one of...the protozoa. He suggested, for example, redefining the protozoans to exclude chlorophyll-bearing flagellates, and his basic...
Maupas, François Émile
Dictionary entry from: Complete Dictionary of Scientific Biography ...interest in natural science and, in particular, in free protozoans. He spent his vacations in Paris in order to work in the...was devoted entirely to sexuality and reproduction among the protozoans, rotifers, nematodes, and oligochaetes, which he studied...
Orbigny, Alcide Charles Victor Dessalines D
Dictionary entry from: Complete Dictionary of Scientific Biography ...phalopodes (1826). In Lamarck ’ s classification the protozoans were still grouped under the cephalopods. D ’ Orbigny...first perceived in 1835 by Dujardin, who discovered their protozoan nature and grouped them with the infusorians. Between 1834...
Phytomastigophora
Book article from: A Dictionary of Plant Sciences Phytomastigophora (subphylum Mastigophora) In protozoan classification, a class of flagellated, plant-like microscopic organisms which typically possess chloroplasts and are photosynthetic...
Chitinodendron franconianum
Book article from: A Dictionary of Earth Sciences Chitinodendron franconianum Single-celled organisms are known from Precambrian strata, but the first protozoans with an external skeleton appear in the Upper Cambrian . C. franconianum is a primitive allogrominid ‘foraminiferid...

Related newspaper, magazine, and trade journal articles from HighBeam Research

Protozoan grazers: they may influence the biological availability of iron to phytoplankton.(Marine Biodiversity)(Cover Story)
Magazine article from: Oceanus; 3/22/1996; ; 700+ words ; ...what happens to colloidal iron oxides ingested by protozoans show that protozoan grazers can greatly accelerate the production of...group of phytoplankton. Given the abundance of protozoans in the upper ocean, this may be a significant...
Study findings from International Center for Genetic Engineering and Biotechnology provide new insights into protozoan.
Newspaper article from: Biotech Week; 6/17/2009; 700+ words ; ...proteins belonging to protozoan species. The database...different parasitic protozoans and organize them under...India report (see also Protozoan). The researchers...proteins belonging to protozoan species. The database...different parasitic protozoans and organize them under...
New protozoan study findings have been published by W. Desouza and colleagues.
Newspaper article from: Science Letter; 8/18/2009; 700+ words ; ...structural organization of the pathogenic protozoan Toxoplasma gondii and its interaction...starting with the description of the protozoan by Splendore in 1908. The intracellular...researchers in Brazil report (see also Protozoan). "Later on, a pioneering method...
Impact of protozoan grazing on nitrification and the ammonia- and nitrite-oxidizing bacterial communities in activated sludge.(Report)
Magazine article from: Canadian Journal of Microbiology; 5/1/2007; ; 700+ words ; ...nutrients. In this study, the effect of protozoan grazing on nitrification rates under...presence and absence of cycloheximide (a protozoan inhibitor), allylthiourea (an inhibitor...and nitrate accumulation. Inhibiting protozoan grazing along with ammonia oxidation...
Studies conducted at University of Lisbon, Center for Environmental Biology on protozoan recently published.
Newspaper article from: Science Letter; 11/18/2008; 700+ words ; ...Pyxidium tardigradum (Ciliophora), a protozoan living on Eutardigrada: infestation...Research. "Pyxidium tardigradum is a protozoan that has been reported on a few occasions...Parasitology Research report (see also Protozoan). "The Portuguese population revealed...
Emerging protozoan pathogens.(Brief article)(Book review)
Magazine article from: SciTech Book News; 9/1/2008; 511 words ; 9780415428644 Emerging protozoan pathogens. Ed. by Naveed Ahmed Khan...result we know more not only about protozoan pathogens but also how to identify...include information on the particular protozoan's epidemiology, pathophysiology...
CD40-CD40L interaction in immunity against protozoan infections.(Clinical report)
Magazine article from: Journal of Biomedicine and Biotechnology; 1/1/2007; ; 700+ words ; ...Activation of the immune system against protozoan infections relies particularly on two...have been particularly investigated in protozoan infection models with regard to their...modulation of immune responses against some protozoan parasites and highlights recent developments...
Correlation between CD4 counts of HIV patients and enteric protozoan in different seasons - An experience of a tertiary care hospital in Varanasi (India).(Research article)(human immunodeficiency virus)(Clinical report)
Magazine article from: BMC Gastroenterology; 8/20/2008; ; 700+ words ; ...Of these, opportunistic protozoan infections are the most serious...Pradesh, India. As most of the protozoan infections are treatable...to isolate and identify the protozoans causing diarrhoea in HIV patients...the occurrence of intestinal protozoan infections was also made as...
British Inventor Discovers Protozoan Rhomboid Proteins
News Wire article from: US Fed News Service, Including US State News; 10/23/2007; 427 words ; ...Cambridge, Great Britain, has discovered protozoan (P) Rhomboid proteins. According...invention relates to the identification of protozoan Rhomboid proteins that are involved in the invasive processes of protozoan pathogens, such as P falciparum...
Protozoan machinery grinds parental genes. (tetrahymena protozoa dispose of their parental genes)(Brief Article)
Magazine article from: Science News; 10/12/1996; ; 700+ words ; ...Lacking a conscience, one tiny protozoan resolves the issue forcefully...found the protein machinery a protozoan uses to turn off, and get...micronucleus takes over and the protozoan starts hunting for a sex partner...Tetrahymena belongs to a family of protozoans called ciliates, and biologists...