News tagged with cones
Parts of Mt Fuji 'could collapse' if fault shifts
Parts of Japan's Mount Fuji, a national symbol and key tourist attraction, could collapse if a newly-discovered faultline under the mountain shifts, a government-commissioned report has warned.
Space & Earth / Earth Sciences
May 11, 2012 |
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Slow snails, fast genes: Predatory snails refine venoms through continuous gene duplication
(Phys.org) -- When tropical marine cone snails sink their harpoon-like teeth into their prey, they inject paralyzing venoms made from a potent mix of more than 100 different neurotoxins.
Apr 10, 2012 |
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Cone snail venom controls pain
Components of the venom from marine cone snails can block the transmission of signals between nerve cells in minute quantities. This makes them potentially suitable for use as a novel analgesic. Researchers ...
Apr 04, 2012 |
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Nanometer-scale growth of cone cells tracked in living human eye
Humans see color thanks to cone cells, specialized light-sensing neurons located in the retina along the inner surface of the eyeball. The actual light-sensing section of these cells is called the outer segment, which is ...
Dec 20, 2011 |
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Mapping the formation of an underwater volcano
On Oct. 9 an underwater volcano started to emerge in waters off El Hierro Island in the Canaries, Spain. Researchers of the Spanish Institute of Oceanography (IEO, Ministry of Science and Innovation) only needed 15 days to ...
Space & Earth / Earth Sciences
Oct 28, 2011 |
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Historic first images of rod photoreceptors in the living human eye
Scientists today reported that the tiny light-sensing cells known as rods have been clearly and directly imaged in the living eye for the first time. Using adaptive optics (AO), the same technology astronomers ...
Jun 08, 2011 |
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Gifts from the Gila monster
Who would have thought that Gila monster saliva would be the inspiration for a blockbuster new drug for Type 2 diabetes? Or that medicines for chronic pain, heart attacks, high blood pressure and stroke would emerge from ...
Jun 01, 2011 |
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Researcher shows how cone snails developed poison gland from spare gut parts
(PhysOrg.com) -- Canadian Louise Page, associate professor at the University of Victoria, BC, has solved a mystery that has perplexed zoologists since early 19th century naturalists first wondered if venomous ...
May 20, 2011 |
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Biologists gain new insights into brain circuit wiring
(PhysOrg.com) -- Neurobiologists at UC San Diego have discovered new ways by which nerves are guided to grow in highly directed ways to wire the brain during embryonic development.
Medicine & Health / Neuroscience
Feb 14, 2011 |
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Sharks are colour-blind: study
Sharks may be unable to distinguish between colours, according to a lab study published on Tuesday that could benefit swimmers, surfers and sharks themselves.
Jan 18, 2011 |
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Mars volcanic deposit tells of warm and wet environment
(PhysOrg.com) -- Roughly 3.5 billion years ago, the first epoch on Mars ended. The climate on the red planet then shifted dramatically from a relatively warm, wet period to one that was arid and cold. Yet ...
Space & Earth / Space Exploration
Oct 31, 2010 |
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Cone of poison: The secret behind the cone snail's venom pump
Scientists have discovered the secret of how an amazing sea snail injects its venom after shooting a harpoon-like tooth into its prey -- or some unlucky swimmer -- at jetliner speeds. The creatures, called cone snails, use ...
Oct 27, 2010 |
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Stem cell technique offers new potential to treat blindness
(PhysOrg.com) -- University College London scientists are pioneering a stem cell treatment to replace diseased parts of the retina, which could lead to a future treatment for retinal diseases that affect around 3,000 children ...
Medicine & Health / Medical research
Sep 22, 2010 |
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A turning point for young neurons
During neural development, newborn neurons extend axons toward distant targets then form connections with other cells. This process depends on the growth cone, a dynamic structure at the growing axon tip of ...
Medicine & Health / Neuroscience
Aug 03, 2010 |
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Vitamin A deficiency in New York City
In high-income countries, diseases related to vitamin deficiencies are not as frequent as in poorer settings but are nonetheless regular occurrences. In a Clinical Picture published Online First and in next week's Lancet, the ca ...
Jul 18, 2010 |
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