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Microbes Microbiology news
Microbiology News
Results 1 - 50 of 114
�
The bacterial zoo living on your skin
Category:�Bacteria�•�Medicine & health
http://scienceblogs.com/notrocketscience/2009/05/the_bacterial_zoo_living_on_your_skin.php, by�Ed Yong
It's a diverse melting-pot of different groups, with hundreds of different cultures living together in harmony, many sticking to their own preferred areas. No, not London,...
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Bacteria And Algae Act As Biocatalysts for Deep-sea Raw Material Deposition�
ScienceDaily (June 4, 2009)�— The sea floor is strewn with raw materials that could be very important in the future: Manganese and iron, but also rarer and more precious elements such as cobalt, copper, zinc and nickel, are present in great quantities in the form of deep-sea nodules and crusts. The...
| 34 hits | Email
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New Germ Busters Outwit Antibiotic-Resistant Bacteria
By Erin Biba
From�http://www.wired.com/medtech/health/magazine/17-06/st_germbusters
Infectious bacteria�have evolved through the loopholes in almost every drug we've created, thanks to our own misuse and overuse. But we may yet outmaneuver them. Researchers are testing new bug-killers that bypass the molecular pathways used...
| 36 hits | Email
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Microbial communities in industrial environment.
Maukonen J,�Saarela M.�Curr Opin Microbiol.�2009 May 14. [Epub ahead of print]
VTT Technical Research Centre of Finland, P.O. Box 1000, FI-02044 VTT, Finland.
There is a wealth of techniques that can and have been used for the characterization of industrial microbial communities. Recently, especially PCR-based methods...
| 99 hits | Email
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Methods for unveiling cryptic microbial partnerships in nature.
Orphan VJ.�Curr Opin Microbiol.�2009 May 15. [Epub ahead of print]
Division of Geological and Planetary Sciences, California Institute of Technology, United States.
Syntrophy and mutualism play a central role in carbon and nutrient cycling by microorganisms. Yet our ability to recognize these partnerships in...
| 97 hits | Email
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Exosomes - vesicular carriers for intercellular communication.
Simons M,�Raposo G.�Curr Opin Cell Biol.�2009 May 11. [Epub ahead of print]
Max-Planck-Institute for Experimental Medicine, Hermann-Rein-Str. 3, G�ttingen, Germany; Department of Neurology, Robert-Koch-Str. 40, University of G�ttingen, G�ttingen, Germany.
Cells release different types of...
| 105 hits | Email
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Peptide trafficking and translocation across membranes in cellular signaling and self-defense strategies. Abele R,�Tamp� R.�Curr Opin Cell Biol.�2009 May 12.�
Institute of Biochemistry, Biocenter, Goethe University Frankfurt, Max-von-Laue Str. 9, D-60438 Frankfurt a.M., Germany.
Cells are metastable per se and a fine-tuned balance of de novo protein synthesis...
| 96 hits | Email
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Recruitment of condensin to replication origin regions by ParB/SpoOJ promotes chromosome segregation in B. subtilis.
Gruber S,�Errington J.�Cell.�2009 May 15;137(4):685-96.
Centre for Bacterial Cell Biology, Institute for Cell and Molecular Biosciences, Newcastle University, Framlington Place, Newcastle Upon Tyne, NE2 4HH, UK.
Proper segregation of DNA replication...
| 93 hits | Email
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Recruitment of SMC by ParB-parS organizes the origin region and promotes efficient chromosome segregation.�
Sullivan NL,�Marquis KA,�Rudner DZ.�Cell.�2009 May 15;137(4):697-707. Department of Microbiology and Molecular Genetics, Harvard Medical School, 200 Longwood Avenue, Boston, MA 02115, USA.
Organization and segregation of replicated chromosomes are essential...
| 93 hits | Email
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Bacteria with a built-in thermometer
http://www.biologynews.net/archives/2009/05/20/bacteria_with_a_builtin_thermometer.html
Researchers in the "Molecular Infection Biology group" at the Helmholtz Centre for Infection Research (HZI) in Braunschweig and the Braunschweig Technical University could now demonstrate for the first time that bacteria of the�Yersinia�genus...
| 93 hits | Email
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Review: Using movies to analyse gene circuit dynamics in single cells
Nature Reviews Microbiology 7, 383-392 (May 2009) | doi:10.1038/nrmicro2056
James C. W. Locke1 & Michael B. Elowitz1
Howard Hughes Medical Institute, Division of Biology and Department of Applied Physics, California Institute of Technology, Pasadena, California 91125, USA.
Abstract
Many...
| 117 hits | Email
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Trends Microbiol. 2009 May;17(5):189-95. Epub 2009 Apr 15.
More than a signal: non-signaling properties of quorum sensing molecules. Schertzer JW, Boulette ML, Whiteley M. Section of Molecular Genetics and Microbiology, The University of Texas at Austin, Austin, TX 78712, USA. Quorum sensing in bacteria serves as an example of the adaptation of single-celled organisms to engage in...
| 105 hits | Email
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Proc Natl Acad Sci U S A. 2009 Apr 22.
Quantitative genome-scale analysis of protein localization in an asymmetric bacterium. Werner JN, Chen EY, Guberman JM, Zippilli AR, Irgon JJ, Gitai Z. Department of Molecular Biology, Princeton University, Princeton, NJ 08540. Despite the importance of subcellular localization for cellular activities, the lack of high-throughput,...
| 81 hits | Email
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Science. 2009 Apr 10;324(5924):255-8.
Coding-sequence determinants of gene expression in Escherichia coli. Kudla G, Murray AW, Tollervey D, Plotkin JB. Department of Biology and Program in Applied Mathematics and Computational Science, University of Pennsylvania, Philadelphia, PA 19104, USA. Synonymous mutations do not alter the encoded protein, but they can influence gene expression....
| 115 hits | Email
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Mol Microbiol. 2009 Apr 2.
Escherichia coli DnaA forms helical structures along the longitudinal cell axis distinct from MreB filaments. Boeneman K, Fossum S, Yang Y, Fingland N, Skarstad K, Crooke E. Department of Biochemistry and Molecular & Cellular Biology, Georgetown University Medical Center, 3900 Reservoir Road, Washington DC 20007, USA. DnaA initiates chromosomal...
| 103 hits | Email
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Curr Opin Biotechnol. 2009 Feb 25.
Decaying signals: will understanding bacterial-plant communications lead to control of soft rot? Charkowski AO. Department of Plant Pathology, University of Wisconsin-Madison, 1630 Linden Dr., Madison, WI 53706, United States. Soft rot pathogens cause significant losses worldwide in fruit and vegetable production during the growing season and after...
| 123 hits | Email
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Curr Opin Microbiol. 2009 Apr;12(2):177-81. Epub 2009 Feb 24.
Bacterial landlines: contact-dependent signaling in bacterial populations. Blango MG, Mulvey MA. Pathology Department, University of Utah, Salt Lake City, 84112-0565, United States. Bacterial populations utilize a variety of signaling strategies to exchange information, including the secretion of quorum-sensing molecules and...
| 124 hits | Email
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Curr Opin Microbiol. 2009 Apr 6.
New fluorescence microscopy methods for microbiology: sharper, faster, and quantitative. Gitai Z. Department of Molecular Biology, Princeton University, Princeton, NJ 08540, United States. In addition to the inherent interest stemming from their ecological and human health impacts, microbes have many advantages as model organisms, including ease of growth...
| 103 hits | Email
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Trichodesmium is unusual among marine microbes because it both "breathes" carbon dioxide like plants, while also taking nitrogen gas from the air and "fixing" it into a fertilizer of the seas.
How Tricho does both these things has long puzzled researchers, since the two processes don't work well together: fixing carbon dioxide creates oxygen, and oxygen inhibits the enzyme that makes fixing...
| 92 hits | Email
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Viral Missing Link Caught on Film
By Brandon Keim, http://www.wired.com/wiredscience/2009/05/mimivirus/
A virus so large and strange that it’s redefined the very concept of a virus has been photographed for the first time. It’s even weirder than expected.
The virus was originally discovered infecting amoebas in a Parisian water tower in 1992. It was orders of magnitude...
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Publication Date: 2008 Nov PMID: 19043544
Authors: Guberman, J. M. - Fay, A. - Dworkin, J. - Wingreen, N. S. - Gitai, Z.
Journal: PLoS Comput Biol
Live-cell imaging by light microscopy has demonstrated that all cells are spatially and temporally organized. Quantitative, computational image analysis is an important part of cellular imaging, providing both enriched information about individual...
| 276 hits | Email
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Encapsulated in silica: genome, proteome and physiology of the thermophilic bacterium Anoxybacillus flavithermus WK1.
Publication Date: 2008 Nov 17 PMID: 19014707 Authors: Saw, J. H. - Mountain, B. W. - Feng, L. - Omelchenko, M. V. - Hou, S. - Saito, J. A. - Stott, M. B. - Li, D. - Zhao, G. - Wu, J. - Galperin, M. Y. - Koonin, E. V. - Makarova, K. S. - Wolf, Y. I. - Rigden, D. J. -...
| 327 hits | Email
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Noncoding RNA control of the making and breaking of sugars.
Publication Date: 2008 Nov 1 PMID: 18981470 Authors: Gorke, B. - Vogel, J. Journal: Genes Dev Noncoding RNA regulators have been implicated in almost all imaginable cellular processes. Here we review how regulatory small RNAs such as Spot42, SgrS, GlmY, and GlmZ and a cis-encoded ribozyme in glmS mRNA control sugar metabolism....
| 304 hits | Email
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Determination of bacterial rod shape by a novel cytoskeletal membrane protein
Daisuke Shiomi1, Masako Sakai1 and Hironori Niki1, 2
1 Microbial Genetics Laboratory, Genetic Strains Research Center, National Institute of Genetics, Mishima, Japan 2 Department of Genetics, The Graduate University for Advanced Studies, Mishima (SOKENDAI), Shizuoka, Japan To whom...
| 319 hits | Email
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How a cyanobacterium tells time.
Publication Date: 2008 Nov 10 PMID: 18983934 Authors: Dong, G. - Golden, S. S. Journal: Curr Opin Microbiol The cyanobacterium Synechococcus elongatus builds a circadian clock on an oscillator composed of three proteins, KaiA, KaiB, and KaiC, which can recapitulate a circadian rhythm of KaiC phosphorylation in vitro. The molecular structures of all three...
| 288 hits | Email
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Active and passive mechanisms of intracellular transport and localization in bacteria.
Publication Date: 2008 Nov 18 PMID: 19007909 Authors: Mignot, T. - Shaevitz, J. W. Journal: Curr Opin Microbiol Spatial complexity is a hallmark of living organisms. All cells adopt specific shapes and organize their contents in such a way that makes possible fundamental tasks such as growth, metabolism,...
| 336 hits | Email
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Small RNAs establish gene expression thresholds.
Publication Date: 2008 Nov 17 PMID: 18935980 Authors: Levine, E. - Hwa, T. Journal: Curr Opin Microbiol The central role of small RNAs in regulating bacterial gene expression has been elucidated in the past years. Typically, small RNAs act via specific basepairing with target mRNAs, leading to modulation of translation initiation and mRNA...
| 330 hits | Email
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The microbe electric: conversion of organic matter to electricity.
Publication Date: 2008 Nov 12 PMID: 19000760 Authors: Lovley, D. R. Journal: Curr Opin Biotechnol Broad application of microbial fuel cells will require substantial increases in current density. A better understanding of the microbiology of these systems may help. Recent studies have greatly expanded the range of...
| 316 hits | Email
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Publication Date: 2008 Nov 17 PMID: 18984052 Authors: Cardenas, E. - Tiedje, J. M. Journal: Curr Opin Biotechnol To discover and characterize microbial diversity, approaches based on new sequencing technologies, novel isolation techniques, microfluidics, and metagenomics among others are being used. These approaches have contributed to discovery of novel genes from environmental samples, to...
| 337 hits | Email
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Publication Date: 2008 Aug 8 PMID: 18692463
Authors: Bonneau, R.
Journal: Cell
Quorum sensing plays a key role in the behavior of many bacteria and is carried out by a wide diversity of secreted molecules and their receptors. In this issue, Swem et al. (2008) provide a detailed site-specific analysis of the functioning of the quorum-sensing receptor LuxN from Vibrio harveyi.
...
| 357 hits | Email
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Publication Date: 2008 Aug PMID: 18573177
Authors: Garti-Levi, S. - Hazan, R. - Kain, J. - Fujita, M. - Ben-Yehuda, S.
Journal: Mol Microbiol
A fundamental challenge in developmental biology is to elucidate the regulatory events that trigger cellular differentiation. Sporulation in the Gram-positive bacterium Bacillus subtilis serves as a simple experimental model system to...
| 371 hits | Email
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Publication Date: 2008 Aug PMID: 18573169
Authors: Fukushima, T. - Szurmant, H. - Kim, E. J. - Perego, M. - Hoch, J. A.
Journal: Mol Microbiol
The concerted interconnection between processes driving DNA synthesis, division septum formation and cell wall synthesis and remodelling in rapidly growing bacteria requires precise co-ordination by signalling mechanisms that are, for the...
| 404 hits | Email
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Publication Date: 2008 Sep 26 PMID: 18602927
Authors: Chatwell, L. - Illarionova, V. - Illarionov, B. - Eisenreich, W. - Huber, R. - Skerra, A. - Bacher, A. - Fischer, M.
Journal: J Mol Biol
The intensely fluorescent lumazine protein is believed to be involved in the bioluminescence of certain marine bacteria. The sequence of the catalytically inactive protein resembles that of...
| 383 hits | Email
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Publication Date: 2008 Aug 8 PMID: 18689487
Authors: Lanigan-Gerdes, S. - Briceno, G. - Dooley, A. N. - Faull, K. F. - Lazazzera, B. A.
Journal: J Bacteriol
Extracellular Phr pentapeptides produced by Gram-positive, spore-forming bacteria regulate processes during transition from exponential to stationary phase growth. Phr pentapeptides are produced by cleavage of their precursor...
| 447 hits | Email
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Publication Date: 2008 Aug 14 PMID: 18681939
Authors: Pompeani, A. J. - Irgon, J. J. - Berger, M. F. - Bulyk, M. L. - Wingreen, N. S. - Bassler, B. L.
Journal: Mol Microbiol
Quorum sensing is the process of cell-to-cell communication by which bacteria communicate via secreted signal molecules called autoinducers. As cell population density increases, the accumulation of...
| 458 hits | Email
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Publication Date: 2008 Aug 6 PMID: 18647168
Authors: Kobayashi, K.
Journal: Mol Microbiol
Undomesticated strains of Bacillus subtilis can form pellicle biofilms in standing culture. Pellicle formation is initiated by repression of flagellar genes and activation of the eps and yqxM operons, which are involved in biofilm-matrix synthesis. SinI is thought to induce the eps and yqxM...
| 501 hits | Email
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Publication Date: 2008 Aug 6 PMID: 18647166
Authors: Ping, L. - Weiner, B. - Kleckner, N.
Journal: Mol Microbiol
In E. coli, the chemotaxis receptor protein Tsr localizes abundantly to cell poles. The current study, utilizing a Tsr-GFP fusion protein and time lapse fluorescence microscopy of individual cell lineages, demonstrates that Tsr accumulates approximately linearly with...
| 454 hits | Email
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Publication Date: 2008 Sep PMID: 18631240
Authors: Grogan, D. W. - Stengel, K. R.
Journal: Mol Microbiol
In order to reveal functional properties of recombination involving short ssDNAs in hyperthermophilic archaea, we evaluated oligonucleotide-mediated transformation (OMT) in Sulfolobus acidocaldarius and Escherichia coli as a function of the molecular properties of the ssDNA...
| 403 hits | Email
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Publication Date: 2008 Jul 19 PMID: 18678259
Authors: Yim, S. K. - Jung, H. C. - Yun, C. H. - Pan, J. G.
Journal: Protein Expr Purif
The technology for over-expressing NADPH-cytochrome P450 reductase (CPR), a diflavin-containing enzyme, offers the opportunity to develop enzymatic systems for environmental detoxication and bioconversions of drugs, pesticides and fine chemicals. In...
| 439 hits | Email
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Publication Date: 2008 Sep PMID: 18675483
Authors: Brenner, K. - You, L. - Arnold, F. H.
Journal: Trends Biotechnol
Microbial consortia are ubiquitous in nature and are implicated in processes of great importance to humans, from environmental remediation and wastewater treatment to assistance in food digestion. Synthetic biologists are honing their ability to program the behavior...
| 447 hits | Email
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Publication Date: 2008 Jun PMID: 18440816
Authors: Porter, S. L. - Wadhams, G. H. - Armitage, J. P.
Journal: Trends Microbiol
Most bacteria have much more complex chemosensory systems than those of the extensively studied Escherichia coli. Rhodobacter sphaeroides, for example, has multiple homologues of the E. coli chemosensory proteins. The roles of these homologues have been...
| 328 hits | Email
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Publication Date: 2008 Jun PMID: 18467096
Authors: Earl, A. M. - Losick, R. - Kolter, R.
Journal: Trends Microbiol
Bacillus subtilis is a remarkably diverse bacterial species that is capable of growth within many environments. Recent microarray-based comparative genomic analyses have revealed that members of this species also exhibit considerable genomic diversity. The...
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Author: Sheilagh Molloy
The chaperone–usher (CU) pathway is responsible for the secretion of cell-surface structures in Gram-negative bacteria, including the type 1 and P pili in pathogenic Escherichia coli. In a recent issue of Cell, researchers from the laboratories of Scott Hultgren, David Thanassi, Gabriel Waksman [From Bacterial secretion: Structural snapshot]
| 313 hits | Email
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Publication Date: 2008 Jun 18 PMID: 18573177
Authors: Garti-Levi, S. - Hazan, R. - Kain, J. - Fujita, M. - Ben-Yehuda, S.
Journal: Mol Microbiol
A fundamental challenge in developmental biology is to elucidate the regulatory events that trigger cellular differentiation. Sporulation in the Gram-positive bacterium Bacillus subtilis serves as a simple experimental model system to...
| 320 hits | Email
|
Publication Date: 2008 Jun 18 PMID: 18573169
Authors: Fukushima, T. - Szurmant, H. - Kim, E. J. - Perego, M. - Hoch, J. A.
Journal: Mol Microbiol
The concerted interconnection between processes driving DNA synthesis, division septum formation and cell wall synthesis and remodelling in rapidly growing bacteria requires precise co-ordination by signalling mechanisms that are, for...
| 313 hits | Email
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Chemosensory pathways, motility and development in Myxococcus xanthus: "
Chemosensory pathways, motility and development in Myxococcus xanthus
Nature Reviews Microbiology 5, 862 (2007). doi:10.1038/nrmicro1770
Authors: David R. Zusman, Ansley E. Scott, Zhaomin Yang
& John R. Kirby
The complex life cycle of Myxococcus xanthus includes predation, swarming, fruiting-body...
| 312 hits | Email
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Microbial regulatory and metabolic networks.: "Publication Date: 2007 Aug PMID: 17719767 Authors: Cho, B. K. - Charusanti, P. - Herrgard, M. J. - Palsson, B. Journal: Curr Opin Biotechnol Reconstruction of transcriptional regulatory and metabolic networks is the foundation of large-scale microbial systems and synthetic biology. An enormous amount of information including the annotated...
| 331 hits | Email
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Z-ring force and cell shape during division in rod-like bacteria.: "Publication Date: 2007 Oct 9 PMID: 17913889 Authors: Lan, G. - Wolgemuth, C. W. - Sun, S. X. Journal: Proc Natl Acad Sci U S A The life cycle of bacterial cells consists of repeated elongation, septum formation, and division. Before septum formation, a division ring called the Z-ring, which is made of a filamentous...
| 292 hits | Email
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Spatial Organization of Myxococcus xanthus During Fruiting Body Formation.: "Publication Date: 2007 Oct 5 PMID: 17921303 Authors: Curtis, P. D. - Taylor, R. - Welch, R. D. - Shimkets, L. J. Journal: J Bacteriol Microcinematography was used to examine fruiting body development of Myxococcus xanthus. Wild-type cells progress through three distinct phases: a quiescent phase with some...
| 348 hits | Email
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Spatial Organization of Myxococcus xanthus During Fruiting Body Formation.: "Publication Date: 2007 Oct 5 PMID: 17921303 Authors: Curtis, P. D. - Taylor, R. - Welch, R. D. - Shimkets, L. J. Journal: J Bacteriol Microcinematography was used to examine fruiting body development of Myxococcus xanthus. Wild-type cells progress through three distinct phases: a quiescent phase with some...
| 304 hits | Email
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