News tagged with molecular
Seeing how evolutionary mechanisms yield biological diversity
10 hours ago |
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An international team of scientists has discovered how changes in both gene expression and gene sequence led to the diversity of visual systems in African cichlid fish.
Sniffing out clues to dogs' compulsive behavior
12 hours ago |
3.8 / 5 (4) |
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(PhysOrg.com) -- At first glance, a dog chasing its tail seems a harmless, if fruitless, pursuit. But for many dogs and their owners, the habit has a dark side, one that means endless hours and energy spent ...
Mystery solved: Scientists now know how smallpox kills
14 hours ago |
5 / 5 (6) |
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A team of researchers working in a high containment laboratory at the Centers for Disease Control and Prevention in Atlanta, GA, have solved a fundamental mystery about smallpox that has puzzled scientists long after the ...
Up a little on the left... now, over to the right... Scientists find a source of nonallergic itch
16 hours ago |
4.5 / 5 (2) |
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Scratching below the surface of a troublesome sensation that's equal parts tingle-tickle-prickle, sensory scientists from Johns Hopkins have discovered in mice a molecular basis for nonallergic itch.
Glowing channels: Microanalysis system for rapid mercury detection
Chemistry / Analytical Chemistry
23 hours ago |
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(PhysOrg.com) -- Water contaminated with mercury is very dangerous for both people and the environment, as mercury is one of the most toxic heavy metals. Though laboratory analyses do deliver precise quantitative measurements, ...
Adding a genetic supertool: Genome Analyzer fuels research dreams and tomorrow's cures
16 hours ago |
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To identify the hemophilia mutation that affected Queen Victoria and her European relatives, scientific detectives used a cutting-edge "deep sequencing tool." Able to trace rare genetic disease mutations, the tool can turn ...
Protein inhibits cancer cell growth
Dec 21, 2009 |
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(PhysOrg.com) -- Researchers at the University of Toronto and Goethe University in Germany have discovered a protein that can inhibit the growth of cancer cells, providing crucial clues for the future development of new drugs ...
Making New Enzymes to Engineer Plants for Biofuel Production
Dec 21, 2009 |
5 / 5 (1) |
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(PhysOrg.com) -- Brookhaven scientists have created a new enzyme with the potential to interfere with a key cell-wall component in plants, possibly leading to plants that are easier to "digest" and convert ...
Scientists take a step towards uncovering the histone code
Dec 20, 2009 |
5 / 5 (6) |
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Researchers at Emory University School of Medicine have determined the structures of two enzymes that customize histones, the spool-like proteins around which DNA coils inside the cell.
New way to break some of the strongest chemical bonds
Dec 16, 2009 |
4.6 / 5 (24) |
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(PhysOrg.com) -- Scientists at Cornell University in the U.S. have found a new way of breaking two of the strongest chemical bonds, at ambient temperature and pressure, and this breakthrough could lead to ...
Researchers Identify Tuberculosis Strain That Thrives on Antibiotic
Dec 21, 2009 |
5 / 5 (1) |
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(PhysOrg.com) -- Scientists have identified a strain of antibiotic-resistant tuberculosis that thrives in the presence of rifampin, a front-line drug in the treatment of tuberculosis. The bacterium was identified in a patient ...
Protein that represses genes may play role in cell growth
Dec 21, 2009 |
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(PhysOrg.com) -- A Cornell study shows the protein not only activates some genes involved in the regulation of cell growth and signaling, but also may play a role in preventing cancers by inhibiting cell proliferation.
Scientist uncovers relics of ancient cosmos
Space & Earth / Space Exploration
Dec 14, 2009 |
4.5 / 5 (19) |
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(PhysOrg.com) -- A University of Manchester scientist, working as part of an international team, has uncovered an unexpectedly rich trove of relicts from the ancient cosmos.
Light used to map effect of neurons on one another
Medicine & Health / Neuroscience
Dec 17, 2009 |
5 / 5 (3) |
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(PhysOrg.com) -- Scientists at Harvard University have used light and genetic trickery to trace out neurons' ability to excite or inhibit one another, literally shedding new light on the question of how neurons ...
Stem-cell activators switch function, repress mature cells
Dec 16, 2009 |
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In a developing animal, stem cells proliferate and differentiate to form the organs needed for life. A new study shows how a crucial step in this process happens and how a reversal of that step contributes to cancer.
