News tagged with host organisms
Parasites or not? Transposable elements in fruit flies
The problem of parasitism occurs at all levels right down to the DNA scale. Genomes may contain up to 80 percent "foreign" DNA but details of the mechanisms by which this enters the host genome and how hosts attempt to combat ...
Feb 03, 2012 |
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Bacterial plasmids -- the freeloading and the heavy-lifters -- balance the high price of disease
Studying self-replicating genetic units, called plasmids, found in one of the world's widest-ranging pathogenic soil bacteria -- the crown-gall-disease-causing microorganism Agrobacterium tumefaciens -- Ind ...
Feb 01, 2012 |
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New TB treatment limits infection while reducing drug resistance
It's estimated that nearly one-third of the world's population -- more than two billion people -- are infected with Mycobacterium tuberculosis. According to the World Health Organization, 5 to 10 percent of infected people ...
Nov 16, 2011 |
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Mega beats Mimi for world's biggest virus
A virus found in the sea off Chile is the biggest in the world, harbouring more than 1,000 genes, surprised scientists reported on Monday.
Oct 10, 2011 |
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B chromosomes affect sex determination in cichlid fishes
B chromosomes have a functional effect on sex determination in a species of cichlid fishes from Lake Victoria, according to a study by Japanese researchers to be published in open-access journal PLoS Genetics on August 18th, ...
Aug 18, 2011 |
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Study examines factors in pediatric kidney transplant rejection
Avoiding HLA-DR mismatching appears to be beneficial in pediatric kidney transplant patients, however the likelihood of finding a matching donor must be considered against the wait time for a possible donation, according ...
Jul 18, 2011 |
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Salmonella utilize multiple modes of infection
Scientists from the Helmholtz Centre for Infection Research (HZI) in Braunschweig, Germany have discovered a new, hitherto unknown mechanism of Salmonella invasion into gut cells: In this entry mode, the bacteria exploit the mu ...
Apr 21, 2011 |
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Accelerated lab evolution of biomolecules could yield new generation of medicines
Scientists at Harvard University have harnessed the prowess of fast-replicating bacterial viruses, also known as phages, to accelerate the evolution of biomolecules in the laboratory. The work, reported this week in the journal ...
Apr 10, 2011 |
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Giant virus found in marine predatory plankton
Researchers have identified a marine giant virus that infects Cafeteria roenbergensis, a widespread planktonic predator that occupies a key position in marine food webs, according to a study.
Nov 02, 2010 |
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The world is not flat: Exploring cells and tissues in three dimensions
The cells and tissues in our bodies grow, develop and interact in a highly complex, three-dimensional world. Likewise, the various microbial pathogens that invade our bodies and cause infectious disease interact ...
Oct 19, 2010 |
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Bioelectrical signals turn stem cells' progeny cancerous
Biologists at Tufts University School of Arts and Sciences have discovered that a change in membrane voltage in newly identified "instructor cells" can cause stem cells' descendants to trigger melanoma-like ...
Oct 19, 2010 |
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Marine viruses changing Earth's system: study
All but overlooked until the past decade, marine viruses far outnumber any other biological entity on the planet. Scientists are only beginning to discover the invisible particles that are the cogs of Earth's ...
Sep 28, 2010 |
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The White Stuff: Marine Lab Team Seeks to Understand Coral Bleaching
(PhysOrg.com) -- With technology similar to that used by physicians to perform magnetic resonance imaging (MRI) scans, researchers from six institutions -- including the National Institute of Standards and ...
Oct 20, 2009 |
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Major breakthrough could lead to new antibiotics for human use
(PhysOrg.com) -- The means to fully understand and exploit a type of fungus that could form the basis of a new class of antibiotics has been developed by researchers at the University of Bristol. With certain ...
Oct 14, 2009 |
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Computers aid in cracking deception in plants
If the growing presence of computer 'geeks' on television crime shows is any indicator, computers are increasingly becoming essential tools for detecting and combating skullduggery. However, television detectives ...
Jun 25, 2009 |
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