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Tag: "eyes" at biology news

Researchers discover way to make cells in the eye sensitive to light

... themelanopsin it could be possible to restore the eyes ability to respondto light.Although making cells in the eye responsive to light is not a cure forblindness, the team are collaborating with engineers from Imperial todevelop a functional retinal prosthesis which would allow theinformation from the li...

Recent breakthroughs in common adult leukemia highlighted in New England Journal of Medicine

...f Medicine (NEJM) in 1995, it was seen through the eyes of theories that dated back to the 1960s. As such, the journal recently invited three of the world's foremost experts on chronic lymphocytic leukemia (CLL) to write an authoritative update covering the transformation in the scientific community's kno...

The transparent organism: EMBLEM and Carl Zeiss give labs a unique look at life

...rack developmental processes like the formation of eyes and the brain in embryonic fish or other model organisms. The presentation of SPIM at scientific conferences has generated a flood of requests for the instrument. "We were extremely pleased to have found Carl Zeiss as an excellent partner to transl...

Ophthalmologists Use Artificial Silicon Retina Microchip To Treat Vision Loss

... Artificial Silicon Retina (ASR) microchips in the eyes of five patients to treat vision loss caused by retinitis pigmentosa (RP). The implant is a silicon microchip 2mm in diameter and one-thousandth of an inch thick, less than the thickness of a human hair. Four patients had surgery Tuesday, January 25...

Ophthalmologists implant five patients with artificial silicon retina microchip

... Artificial Silicon Retina (ASR) microchips in the eyes of five patients to treat vision loss caused by retinitis pigmentosa (RP). The implant is a silicon microchip 2mm in diameter and one-thousandth of an inch thick, less than the thickness of a human hair. Four patients had surgery Tuesday, January 25...

Artifical cornea lets woman blind 20 years see

...scarred her corneas and reduced the ability of her eyes to soothe their damaged surfaces by remaining mois...icial cornea, or keratoprosthesis, into one of her eyes -- restoring her sight in that eye and ultimately helping her regain much of her independence. Phife...

New tumor-suppressor gene discovered

...dditional normal wts gene and found that the fly's eyes were decreased in size and deformed. In the third experiment, they inserted both a mats gene and a wts gene. "We found that mats and wts together can shrink the fly's eye much more dramatically," Lai reports. "Their effect is not additive, but synerg...

Researchers discover underwater volcano

...lt volcano. "It is a good idea for us to keep our eyes on this area, but there is no real reason for concern about immediate danger," said Staudigel. Three students from High Tech High in San Diego were aboard one of the two expeditions to Nafanua and assisted researchers in collecting and analyzing dat...

Migratory songbirds have a specialized night-vision brain area

...e night-migratory songbird species with the birds' eyes covered. The researchers found that blocking night-time vision dramatically reduced gene activity in cluster N. "This result confirmed that night-migratory birds seem to have a brain area specifically adapted for seeing during their night-time fligh...

Rhesus monkeys can assess the visual perspective of others when competing for food

...eliably stole food from a competitor with only his eyes averted, rather than one facing perfectly forward,...an experimenter with a piece of cardboard over his eyes rather than one with cardboard over his mouth. Together, these results reveal not only that rhesus m...

Researchers find new giant amphibian fossils in Africa

... Nigerpeton ricglesi had rounded noses, with small eyes and both small and large fang-like teeth. Saharastega moradiensis had curved 'horns' on the back of its head and an array of small teeth. "Our findings show that climate change more than 250 million years ago had a dramatic effect on species surviva...

Brain May Be Less Plastic Than Hoped

...flow, and hence, brain activity. With the monkey's eyes held open, the team focused various grid and circle patterns on the animal's retina, centered on the fovea—a small depression in the retina where vision is most acute—and covering the blind spot. They made baseline measurements of the cortical quiet ...

Bobbing birds do it for a reason

...ir feet. The tallest birds in North America--their eyes can be more than 5 feet above the ground--whooping cranes exhibit high-amplitude head movements during locomotion, making the measurement of the speed of the head relatively easy via non-invasive computer-video techniques. The cranes search both for ...

Microarrays as phenotype

...ye color. That is that individual's genotype. Blue eyes is the phenotype. The microarray data Shaulsky and his collaborators used show that they can determine the order in which genes act in a cascade that results in a particular phenotype. Shaulsky and his co-authors performed their work in Dictyosteli...

Diabetic nerve therapy shows 'striking' results

... organs, including the heart, kidneys, sex organs, eyes and digestive tract. The incidence of diabetes, a condition in which the amount of glucose in the blood is too high, is increasing dramatically, with the World Health Organisation estimating that some 300 million people worldwide could be affected b...

Genetic links could unlock clues to leading cause of blindness

...ion. Unlike most other animals, a rhesus monkey's eyes have the same complex structure as a human eye, ma...he said he sometimes slips images of rhesus monkey eyes into presentations for medical residents to see if anyone notices the difference. "I haven't been c...

Scripps research scientists solve structure of a critical innate immune system protein

...s reason, Toll-like receptors have been called the eyes of the innate immune system. Normally, when human or mouse cells encounter bacteria or viruses, they recognize proteins, lipids, or other molecular components of these foreign invaders through a family of TLR proteins, and then trigger the immune sys...

Gifts from the sea

...scientists have studied skate retinas to learn how eyes adapt to light changes, and to understand diseases that can cause blindness. Green sea urchin (Strongylocentrotus droebachiensis): The female sea urchin can produce as many as a half million eggs during spawning season, and fertilization and embryon...

Fragment of yellow fever virus may hold key to safer vaccine

...d heart damage, and bleeding from the mouth, nose, eyes or stomach. At that stage, ter Meulen and colleagues reported last year in the Journal of Infectious Diseases, a person's own immune system, disrupted by its reaction to yellow fever virus infection, may lead to death rather than recovery. The most ...

Scientists focus on 'dwarf eye'

...rom the complex growth of the human eye. All human eyes have a slight degree of farsightedness at birth. A...p growing. Due to natural genetic mutations, some eyes continue to grow beyond this point, causing nearsightedness. Other mutations cause the eye to stop g...

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