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| | Chemotaxis |
 | | They must be able to adapt to the temporary absence of suitable prey, for example by entering resting stages such as cysts, but it is obviously an advantage to be able to "smell out" prey items and craw toward the source. | | | Much of what we know about chemotaxis has been learned from studying the slime mould Dictyostelium discoideum, and comparing this to our own neutrophils, the white blood cells that detect and consume invading bacteria in our bodies. | | | Mammalian PLCg become localised to the leading edge in a PI3-Kinase dependent manner (Piccola et al, 2002). |
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http://www.bms.ed.ac.uk/research/others/smaciver/Chemotaxis.htm
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| | Genetic analysis of response regulator activation in bacterial chemotaxis suggests an intermolecular mechanism -- Re et ... |
| | chemotaxis responses in Escherichia coli (Falke et al. | | | from ATP to the chemotaxis response regulator CheY. | | | Lowry, D.F., Roth, A.F., Rupert, P.B., Dahlquist, F.W., Moy, F.J., Domaille, P.J., and Matsumura, P. Signal transduction in chemotaxis: A propagating conformation change upon phosphorylation of CheY. |
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http://www.proteinscience.org/cgi/content/full/11/11/2644
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| | Title page for ETD etd-03302000-14230006 |
| | To quantify chemotaxis in an easier fashion, a simplified capillary chemotaxis assay, utilizing a hypodermic needle, syringe and disposable pipette tip was developed. | | | This study shows that low-substrate regulated microaerophilic behavior helps some microorganisms to track the oxygen minima in their habitat and thus effectively move to an environment, which allows them to thrive. | | | The simplified technique may be useful for routine chemotactic testing. |
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http://scholar.lib.vt.edu/theses/available/etd-03302000-14230006
(432 words)
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| | C3a and C5a Stimulate Chemotaxis of Human Mast Cells -- Hartmann et al. 89 (8): 2863 -- Blood |
| | Because cell spreading might influence chemotaxis, laminin was chosen for precoating polycarbonate filters in all chemotaxis experiments. | | | Data represent the mean ± SEM of 3 to 13 triplicate experiments for C3a (A; n = 3 to 13) and the mean ± SEM of 2 to 10 triplicate experiments for C5a (B; total n = 6 to 10). | | | C3a and C5a Stimulate Chemotaxis of Human Mast Cells |
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http://www.bloodjournal.org/cgi/content/full/89/8/2863
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| | chemotaxis on Encyclopedia.com |
| | Chemotaxis, aggregation behavior, and foot formation in Dictyoselium discoideum amoeba controlled by microbeam uncaging of cyclic-AMP. | | | C-peptide induces chemotaxis of human CD4-positive cells: involvement of pertussis toxin-sensitive G-proteins and phosphoinositide 3-kinase.(Signal Transduction) |
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http://www.encyclopedia.com/html/X/X-chemotax.asp
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| | negative chemotaxis: Web Search Results from Answers.com |
| | Studies on negative chemotaxis and the survival value of motility in... | | | Results 1 - 10 of about 26,200 for negative chemotaxis... | | | Several methods for detecting or measuring negative chemotaxis are described. |
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http://www.answers.com/negative+chemotaxis
(210 words)
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| | CHEMOTAXIS |
| | The authors demonstrate how basic chemotaxis is to life and how widespread it is, and presents the state of the art with respect to its molecular and physiological mechanisms. | | | Chemotaxis — the response of cells to chemical stimuli by directed movement — is one of the most basic and fascinating processes in nature, involved in both health and disease. | | | Because chemotaxis research is still in progress, the book also indicates open questions and future directions of research. |
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http://www.icpress.co.uk/books/lifesci/p303.html
(261 words)
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| | Untitled Document |
| | This is a non-directional response which changes the rate of movement, hence it is a chemokinetic response. | | | Chemotaxis should not be confused with the process of Chemokinesis, in which there is no overall direction of movement induced by a chemical, but rather there is a change in the rate of movement. | | | Chemotaxis may be defined as "a change in the direction of movement of a motile cell in response to a concentration gradient of a specific chemical". |
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http://www.bch.bris.ac.uk/staff/henderson/Chemotaxis.htm
(565 words)
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| | Chemotaxis and flagellar genes of Chromobacterium violaceum |
| | Twenty-six ORFs involved in the chemotaxis transduction pathway were found in this bacterium. | | | This review focuses on the genomic organization and structural analysis of the deduced proteins of the chemosensory adaptation system of C. | | | Shah, D.H., Porter, S.L., Harris, D.C., Wadhams, G.H. and Armitage, J.P. Identification of a forth cheY gene in Rhodobacter sphaeroides and interspecies interaction within the bacterial chemotaxis signal transduction pathway. |
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http://www.funpecrp.com.br/gmr/year2004/vol1-3/SCv0007_full_text.htm
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| | Chemotaxis |
| | Roughly speking, chemotaxis refers to directional changes, like active choice of a preferred direction, whereas chemokinesis refers to undirected change, like increasing the turning frequency. | | | The main purpose is to study mathematical problems related to chemotaxis modeling, exchange of new ideas and methods and to discuss overlab with other disciplines. | | | Unfortunately, the term "chemotaxis" is used differently in the biological and mathematical literature. |
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http://www.math.ualberta.ca/~thillen/chemotaxis.html
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| | Chemotaxis |
| | To investigate the behavioral mechanism of chemotaxis in Caenorhabditis | | | These notes are focused on the study of nematodes and on the chemotaxis of | | | A model for signal transduction during chemotaxis in Treponema... |
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http://www.mongabay.com/reference/environment/Chemotaxis.html
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| | Chemotaxis |
| | Our attempt is to provide easy definitions on Chemotaxis and any other medical topic for the public at large. | | | This definition of Chemotaxis may be disputed by other professionals. | | | If you have a better definition for Chemotaxis than the one presented here, please let us know by making use of the suggest a term option. |
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http://www.healthdictionary.info/Chemotaxis.htm
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| | Chemotaxis |
| | The changes in swimming behavior must result in the sperm getting closer to the source of A. | | | Chemotaxis in sperm has been shown to exist in several studies - some of which include human sperm (7, 8, 9, 10, 12). | | | If chemotaxis exists in human sperm then a spermatozoa must be able to detect an attractant (A) produced by the egg or follicle and change its swimming behavior as a function of this attractant's concentration ([A]). |
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http://home.comcast.net/~helen7/CASA/Chemotaxis_Model.htm
(1511 words)
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| | Chemotaxis in Bacteria |
| | They also must adapt so that they can respond to any changes that may occur. | | | And while bacteria may not be very complex organisms comparatively, even the process and mechanisms of chemotaxis illustrate that indeed at all levels life is intricate and facinating. | | | For my project, I wanted to look at the possibility of the existence of the ability to "smell" in other, less complex organisms in the hopes that there it would be better understood. |
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http://zebra.biol.sc.edu/smell/marty/marty_doc.html
(2384 words)
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| | chemotaxis - OneLook Dictionary Search |
| | Chemotaxis : Drug Discovery and Development [home, info] | | | Phrases that include chemotaxis: negative chemotaxis, positive chemotaxis, bacterial chemotaxis, chemotaxis leukocyte, chemotaxis methyltransferase, more... | | | chemotaxis : The On-line Medical Dictionary [home, info] |
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http://www.onelook.com/?w=chemotaxis
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| | Chemotaxis - Wikipedia, the free encyclopedia |
| | Additionally, it has been recognized that mechanisms that allow chemotaxis in animals can be subverted during cancer metastasis. | | | In multicellular organisms, chemotaxis is critical in development as well as normal function. | | | Chemotaxis is the phenomenon in which bodily cells, bacteria, and other single-celled or multicellular organisms direct their movements according to certain chemicals in their environment. |
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http://en.wikipedia.org/wiki/Chemotaxis
(911 words)
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| | chemotaxis |
| | movement of cells or organisms in response to chemicals, whereby the cells are attracted (positive chemotaxis) or repelled (negative chemotaxis) by substances exhibiting chemical properties. |
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http://crisp.cit.nih.gov/Thesaurus/00001552.htm
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| | Blockade of {{alpha}}5{{beta}}1 Integrins Reverses the Inhibitory Effect of Tenascin on Chemotaxis of Human Monocytes ... |
| | the inhibitory effect of tenascin on monocyte and PMN chemotaxis, | | | Integrins Reverses the Inhibitory Effect of Tenascin on Chemotaxis of Human Monocytes and Polymorphonuclear Leukocytes Through Three-Dimensional Gels of Extracellular Matrix Proteins | | | Blockade of {{alpha}}5{{beta}}1 Integrins Reverses the Inhibitory Effect of Tenascin on Chemotaxis of Human Monocytes and Polymorphonuclear Leukocytes Through Three-Dimensional Gels of Extracellular Matrix Proteins -- Loike et al. |
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http://www.jimmunol.org/cgi/content/abstract/166/12/7534
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| | Eukaryotic Chemotaxis |
| | Our goal in this mini-workshop is to bring together biologists (working both on Dictyostelium and on other cells) and modelers (from the physics and engineering communities) interested in eukaryotic chemotaxis. | | | But, new experimental techniques (single molecule sensing, microfluidics based control of chemical stimuli, etc) just now coming on-line, together with continued work on these theoretical models should lead to rapid progress over the next few years. | | | Unlike bacteria which act as point sensors and determine static gradients by temporal sampling, most evidence to date suggests that receptor occupancy differences across a static eukaryotic cell provides enough input for this sensing to take place. |
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http://www.physics.ucsb.edu/~deborah/bionet/link5.html
(274 words)
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| | Learning How The Attraction Called Chemotaxis Works |
| | He has been using the amoeba to examine how this process, known as "chemotaxis," works. | | | Now, in the Oct. 26 issue of the journal Science, Japanese scientists and Devreotes describe success in imaging single molecules of cAMP as they interact with docking points, or receptors, on the surface of these amoebae. |
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http://unisci.com/stories/20014/1030011.htm
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| | Chemotaxis |
| | Cytokine-stimulated chemotaxis of human neutrophils in a 3-D conjoined fibrin gel assay. | | | Sedgwick J D. The anaphylatoxin receptor for complement C3a is expressed by rat microglia andrat oligodendrocytes. | | | PKC and tyrosine kinase involvement in amyloid beta (25-35)-induced chemotaxis of microglia, Neuroreport 9(15) :3467-3470, 1998. |
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http://www.math.ubc.ca/~ais/website/refs/chemo.html
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| | Chemotaxis |
| | Confocal image of GFP-tagged CRAC in living amoebae undergoing chemotaxis. | | | Confocal image of GFP-tagged Gb-subunits in living amoebae undergoing chemotaxis. | | | The chemoattractant gradient is established using a micropipet located just above the frames. |
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http://dictybase.org/Multimedia/chemotaxis/Chemotaxis.htm
(328 words)
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| | New Gibraltar Encyclopedia of Progressive Rock GA-GH |
| | This time we hear an excellent mix of both styles from Path of Dreams and The Seduction of Madness, though the way arrangements are made here is an absolute breakthrough. | | | The first 35-minute "Chemotaxis" is a major outstanding composition here, as well as another long one from Seravalle "La Belle Dame" (over 10 minutes, they form the whole album together!). | | | One and a half years later Garden Wall returned with their fourth album, Chimica, and we learn that this new one sounds again differently from any of Garden Wall's previous albums, as always. |
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http://www.gepr.net/ga.html
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