News tagged with chemical signals
Study sheds light on brain's fear processing center
Nov 25, 2009 |
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Breathing carbon dioxide can trigger panic attacks, but the biological reason for this effect has not been understood. A new study by University of Iowa researchers shows that carbon dioxide increases brain acidity, which ...
Scientists guide immune cells with light and microparticles (w/ Video)
Nov 16, 2009 |
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A team led by Yale University scientists has developed a new approach to studying how immune cells chase down bacteria in our bodies. Their findings are described in the November 15 issue of Nature Methods Advanc ...
When ants attack: Researchers recreate chemicals that trigger aggression
Oct 27, 2009 |
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(PhysOrg.com) -- Experiments led by researchers at the University of California, Berkeley, have demonstrated that normally friendly ants can turn against each other by exploiting the chemical cues they use ...
New and unexpected mechanism identified how the brain responds to stress
Medicine & Health / Neuroscience
Mar 02, 2009 |
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Chronic stress takes a physical and emotional toll on our bodies and scientists are working on piecing together a medical puzzle to understand how we respond to stress at the cellular level in the brain. Being able to quickly ...
Capillary formation’s mechanical determinants: One growth factor can have many effects
Mar 09, 2009 |
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(PhysOrg.com) -- Harvard researchers have established a link between the growth of blood vessels and the mechanical stresses caused by the environment within which the vessels grow, a new understanding that ...
Can cannibalism fight infections?
Feb 02, 2009 |
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Whenever humans create a new antibiotic, deadly bacteria can counter it by turning into new, indestructible super-bugs. That's why bacterial infection is the number one killer in hospitals today. But new research ...
'Smart scaffolds' may help heal broken hearts
Jan 12, 2009 |
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Canadian researchers have, for the first time, developed an organic substance that attracts and supports cells necessary for tissue repair and can be directly injected into problem areas. This development, published online ...
Hydrocarbon afterglow reveals reproductive cheaters
Biology /
Jan 09, 2009 |
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(PhysOrg.com) -- An ‘honest indicator’ has been discovered by a scientific team at Arizona State University that reveals reproductive cheating. But before you run out to buy an infidelity identification kit, ...
