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Amoeba in Medical News

Study shows how Salmonella survives in environment

... a secretion system to protect themselves inside amoeba a single-celled organism living on land and in the water. The research suggests that amoeba may be a major source of Salmonella within the ... in the human immune system as well as inside amoeba living in the environment. This system ...

Scientists ID Enzyme That Allows Dysentery Amoeba to Hide

... an enzyme that may help dysentery-causing amoeba evade the immune system. The finding may ... found the EhROM1 enzyme in the dysentery-causing amoeba Entamoeba histolytica . The study was ... is needed to determine exactly how it helps this amoeba evade detection by the immune system. The ...

How Montezuma gets his revenge

... a new enzyme that may help the dysentery-causing amoeba evade the immune system. "This is the first ... enzymes. They found that the dysentery-causing amoeba Entamoeba histolytica contains one rhomboid ... protein targets cut by EhROM1 by looking for amoeba proteins that had structural signatures similar ...

Tips from the journals of the American Society for Microbiology

... in ferrets reveals the potential for protective single-shot immunization. Journal of Virology , 83. 15: 7770-7778.) Infection-Causing amoeba May be Resistant to Multiple Contact Lens Solutions A new study suggests that some contact lens solutions do not properly disinfect against ...

Discovery in amber reveals ancient biology of termites

... age-old example of mutualism, the new study revealed 10 new fossil flagellate species of protozoa, a new species of termite, a new genus of fossil amoeba and 14 additional trophic and encysted protist stages. Poinar for many years has studied life forms and other material found trapped in amber. As ...

Researchers find new way to block destructive rush of immune cells

... conditions made worse by misplaced inflammation, like atherosclerosis, stroke and transplant rejection, researchers said. Where a single-celled amoeba moves to find food, human cells migrate as part of complex bodily functions like immunity. Disease-fighting cells for instance move toward bacteria ...

Optometrists Support AMO's Voluntary Contact Lens Solution Recall

... remain vigilant to quickly diagnose and initiate treatment of this serious eye infection." According to the AOA, Acanthamoeba are microscopic amoeba commonly found in the environment, which rarely cause infections. When infection does occur, however, it can be extremely serious and can threaten a ...

Micro-world of Prehistoric Bacteria Found in Amber

... of ancient micro-organisms. A key discovery was that many microbes appear to have changed very little in the last 200 million years. One amoeba found in the amber, Centropyxis hirsuta, is identical to a species that survives today. Amber is solidified tree sap, which can preserve small ...
Amoeba in Biological News

Stress signals link pre-existing sickness with susceptibility to bacterial infection

... between simple organisms like Dictyostelium and humans allow scientists to use them to understand human disease. Dictyostelium is a free-living amoeba whose rapid movements make it useful to study motility and energy regulation, and in this case, the association between energy regulation and ...

Diuscovery in amber reveals ancient biology of termites

... age-old example of mutualism, the new study revealed 10 new fossil flagellate species of protozoa, a new species of termite, a new genus of fossil amoeba and 14 additional trophic and encysted protist stages. Poinar for many years has studied life forms and other material found trapped in amber. As ...

Texas-sized tract of single-celled clones

... one colony of aspen clones in Utah contains more than 40,000 trees that share a massive root system. In contrast, the short-lived patch of amoeba clones contained millions of genetically identical individuals of the species Dictyostelium discoideum . Though they typically live as loners, ...

Making the ultimate family sacrifice

... close to their kin before altruistically giving their all. The study, which appears this week in PLoS Biology , focuses on the soil-dwelling amoeba Dictyostelium discoideum . These single-celled creatures eat bacteria, and as long as food is plentiful, they're content to live alone. But when ...

Scientists find how amber becomes death trap for watery creatures

... the evolution of microorganisms, he said. We all think of horses, elephants and people as having changed a great deal through time, he said. Have amoeba and other microscopic organisms changed much? Or have they found a niche or what we call a stasis in which their evolutionary lineage persists for ...

Scientists' cell discovery unearths evolutionary clues

... there was almost no molecular data for social amoeba ?Dictyostelia ?which are a hugely diverse and ... first time the family tree of all known social amoeba species and the evolution of their multicellular ... The existing family tree of the social amoeba was based on how the multicellular structures of ...

MRSA use amoeba to spread, new research shows

... objects such as vases, sinks and walls. As amoeba produce cysts to help them spread, this could ... on other pathogens suggests that by infecting amoeba first, MRSA may emerge more virulent and more ... for hospitals should recognise the role played by amoeba in the survival of MRSA, and evaluate control ...

Genome of deadly amoeba shows surprising complexity, evidence of lateral gene transfer

... The genome sequence of the parasitic amoeba Entamoeba histolytica, a leading cause of severe ... the unusual shared biology between the parasitic amoeba and anaerobic gut bacteria. The E. histolytica ... in the sequences of other supposedly 'simple' amoeba genomes." Named for its effectiveness in ...

Single cell amoeba increases MRSA numbers 1000- fold

... Scientists in the UK have found that a type of amoeba acts as an incubator for MRSA bacteria. As amoebae are often found in ... spreading any trapped bacteria. "We need more research into the role of amoeba in the spread of MRSA ?hospitals should aim to eradicate amoebae as well ...

Biologists determine genetic blueprint of social amoeba

... complete genetic blueprint of Dictyostelium discoideum, a simple social amoeba long used by researchers as a model genetic system, much like fruit flies ... evolutionary biologists, the genetic blueprint of Dictyostelium, the first amoeba genome to be sequenced, has clarified the place that Dictyostelium ...

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Amoeba in Biological Definition

Cell growth

... Dense populations of a giant sulfur bacterium in Namibian shelf sediments - Large protists of the genus Chaos , closely related to the genus amoeba Cell reproduction The process of cell reproduction has three major parts. The first part of cell reproduction involves the replication of ...

Osmoregulation

... as in the pine. The sand-dune marran grass has rolled leaves with stomata on the inner surface. Osmoregulation in protoctists and animals amoeba makes us of a contractile vacuole to collect excretory waste, such as ammonia , from the intracellular fluid by both diffusion and active ....

Protist

... are grouped into: Flagellates Move using flagella e.g. Euglena Amoeboids Move using pseudopodia e.g. amoeba Ciliates Move using cilia e.g. Paramecium Sporozoa Non-motile parasites that form spores e.g. Plasmodium ...

Protist

... are grouped into: Flagellates Move using flagella e.g. Euglena Amoeboids Move using pseudopodia e.g. amoeba Ciliates Move using cilia e.g. Paramecium Sporozoa Non-motile parasites that form spores e.g. Plasmodium ...

Pseudopod

... can be classified into several varieties according to their appearance: Lobopodia are bulbous, short and blunt in form, very typical of amoeba species. Filopodia are more slender and filiform with pointed ends, consisting mainly of ectoplasm . These formations are supported by ...
Amoeba in Biological Dictionary

Amoeba

... outside stimuli such as changes in salinity. amoeba also ameba n. , pl. -bas also -bas , or -bae also -bae. ... To view a slide of an amoeba Tad sets a microscope to enlarge objects 100 times ... amoeba Group Members: Rick Davies , Robert Rich Similar ...

Unicellular

... unicellular " ... Structure of an amoeba: unicellular animal with pseudopods that lives in fresh or saltwater. ... Pseudopodium: part of the amoeba used for locomotion. ... Welcome to the Guide, your online reference for unicellular biology. ... Chapter Seven: The Classification of ...

Rhizosphere

... to the influence of plant roots and characterized by a zone of increased Rhizosphere (ecology) An illustration of the rhizosphere A= amoeba consuming bacteria BL=Energy limited bacteria BU=Non-energy limited bacteria Definition of rhizosphere from the Merriam-Webster Online ...

Rhizopoda

... Family. Arcellidae. Genus. Arcella. • Length: 50-60 mm ... ( Rhizopoda : Arcellinida). Arch. Protistenk., 134:161-167. Ogden, C. G. 1985. ... amoeba Microchlamys patella (Claparède & Lachmann, 1859) ( Rhizopoda : Arcellinida) ... ...

Protist

... Article from Wikipedia on the unicellular microbes that are traditionally ... to refer to a unicellular heterotrophic protist , such as an amoeba or a ciliate. ... We retain the word " protist " as a convenient term to mean "eukaryote that isn't ... We recommend the Protist Image Database ...

Pinocytosis

... mean? ... pinocytosis /pino·cy·to·sis/ (pi′′nah-si-to'sis) a mechanism by which cells ... entire Web this site. pinocytosis . An amoeba showing pinocytosis ... Pinocytosis ("cell drinking") is a form of endocytosis. Related category. • CELL BIOLOGY ... Why is receptor-mediated ...

Oscillatoria

... earth. ... Images of Nostoc and Oscillatoria provided by the University of Wisconsin ... Media. Paramaecium 400x. Stentor 100x. Closterium 100x. amoeba 100x. Oscillatoria . Rotifer ... Place slide under microscope and observe. Phacus. Paramaecium ... One-word search: Scientific Name. Common ...

Cells

... . Colorful pictures and descriptions of cellular components. ... There are cells that are organisms onto themselves, such as microscopic amoeba ... Biology4Kids.com! The web site that teaches the basics of biology and life science to everyone! ... Cells are small compartments that ...

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