News tagged with tadpoles
Cosmetic chemical hinders brain development in tadpoles
Scientists, health officials, and manufacturers already know that a chemical preservative found in some products, including cosmetics, is harmful to people and animals in high concentrations, but a new Brown ...
Medicine & Health / Neuroscience
Jan 10, 2012 |
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Researchers discover that changes in bioelectric signals cause tadpoles to grow eyes in back, tail
For the first time, scientists have altered natural bioelectrical communication among cells to directly specify the type of new organ to be created at a particular location within a vertebrate organism. Using ...
Dec 08, 2011 |
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Image: Asteroid caught marching across Tadpole Nebula
(PhysOrg.com) -- This infrared image from NASA's Wide-field Infrared Survey Explorer, or WISE, showcases the Tadpole Nebula, a star-forming hub in the Auriga constellation about 12,000 light-years from Earth. ...
Sep 28, 2011 |
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Scientists show for first time how early human embryo acquires its shape
How is it that a disc-like cluster of cells transforms within the first month of pregnancy into an elongated embryo? This mechanism is a mystery that man has tried to unravel for millennia.
Jul 19, 2011 |
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The face of a frog: Time-lapse video reveals never-before-seen bioelectric pattern
For the first time, Tufts University biologists have reported that bioelectrical signals are necessary for normal head and facial formation in an organism and have captured that process in a time-lapse video that reveals ...
Jul 18, 2011 |
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Studies show importance of visual stimulation in wiring up species' brains to see
Any parent knows that newborns still have a lot of neurological work to do to attain fully acute vision. In a wide variety of nascent animals, genes provide them with only a rough wiring plan and then leave it to the developing ...
Medicine & Health / Neuroscience
Jun 05, 2011 |
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New role for an old molecule: protecting the brain from epileptic seizures
For years brain scientists have puzzled over the shadowy role played by the molecule putrescine, which always seems to be present in the brain following an epileptic seizure, but without a clear indication whether it was ...
Medicine & Health / Neuroscience
Mar 06, 2011 |
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Sunbathing not good for tadpoles
(PhysOrg.com) -- The thinning ozone layer in the upper atmosphere may be a key factor in the collapse of frog populations worldwide, new research shows.
Feb 17, 2011 |
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Sterility in frogs caused by environmental pharmaceutical progestogens
Frogs appear to be very sensitive to progestogens, a kind of pharmaceutical that is released into the environment. Female tadpoles that swim in water containing a specific progestogen, levonorgestrel, are subject to abnormal ...
Feb 16, 2011 |
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Inventions of evolution: What gives frogs a face
Zoologists of the University Jena (Germany) analysed the central factor for the development of the morphologically distinctive features of the tadpoles. "We were able to show that the 'FOXN3' most of all influences ...
Jan 13, 2011 |
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Amazing discovery in Borneo: Tiny, new, pea-sized frog is old world's smallest
The smallest frog in the Old World (Asia, Africa and Europe) and one of the world's tiniest was discovered inside and around pitcher plants in the heath forests of the Southeast Asian island of Borneo. The ...
Aug 25, 2010 |
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Asteroid Caught Marching Across Tadpole Nebula
(PhysOrg.com) -- A new infrared image from NASA's Wide-field Infrared Survey Explorer, or WISE, showcases the Tadpole nebula, a star-forming hub in the Auriga constellation about 12,000 light-years from Earth. ...
May 13, 2010 |
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The sea squirt offers hope for Alzheimer's sufferers
Alzheimer's disease affects an estimated 27 million people worldwide. It is the most common form of age-related dementia, possibly the most feared disease of old age. There is no cure, and the available drugs only help to ...
Mar 02, 2010 |
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Tadpoles Used to Rapidly Detect Water Pollution
(PhysOrg.com) -- Research conducted by University of Wyoming Professor Paul Johnson and others demonstrates that genetically modified tadpoles work well as sensitive monitors for rapidly detecting water pollution.
Dec 03, 2009 |
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Research suggests EPA pesticide exposure test too short, overlooks long term effects
The four-day testing period the U.S. Environmental Protection Agency (EPA) commonly uses to determine safe levels of pesticide exposure for humans and animals could fail to account for the toxins' long-term effects, University ...
Aug 17, 2009 |
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