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Tag: "colors" at biology news

Color perception is not in the eye of the beholder: It's in the brain

...--by up to 40 times--yet people appear to perceive colors the same way. The findings, on the cover of this w...s each cone in the human eye to react to different colors is very fragile and normal microscope light bleaches it away. This means that looking at the retina ...

Nanoscale method for investigating living systems

...tage." Quantum dots can be encoded with different colors making them useful as fluorescent labels for staining cells. Their resistance to photobleaching and physical size of less than 10 nanometers are making them increasingly popular in biomedical applications ranging from intracellular tagging of molecul...

Quantum dots provide a faster, more sensitive method for detecting respiratory viral infections

... Crowe demonstrate that they can use two different colors of quantum dots simultaneously. The colored quantum dots are attached to different "linker" molecules that bind to different RSV surface structures. "It's not much of a jump from two to five," Wright says. Quantum dots are available in a dozen diffe...

Tagging pathogens with synthetic DNA 'barcodes'

...oresce under ultraviolet light in a combination of colors that can be read by a computer scanner or observed with a fluorescent light microscope. Other methods of identifying biological molecules that are available or being developed mostly involve expensive equipment, Luo said. "We wanted something that c...

The evolutionary triumph of flower power

... accounts for the incredible variety of shapes and colors we see in domesticated flowers today. McGuire suggests that nature's prettier flowers got to survive and thrive because people didn't destroy them when they cleared land for agriculture. Instead, they cultivated them and have been doing so for more t...

New insight into people who 'see' colors in letters and numbers

...eople with a form of synesthesia in which they see colors when viewing letters and numbers really do see col... shapes and colors. Some synesthetes report seeing colors when listening to music, or feeling tactile shapes while tasting food. This cross-activation might d...

First real-time view of developing neurons reveals surprises, say Stanford researchers

... distinct population of neurons turned fluorescent colors to indicate their activity. Moving the square the reverse direction triggered a different population of neurons to light up. "At first we felt like we let some air out of our own tires with this finding," said Smith. His previous work had supported ...

Nano-Probes Allow an Inside Look at Cell Nuclei

... few hundred or thousand atoms that emit different colors of light when illuminated by a laser. Because thes...gi bodies. And because quantum dots emit different colors of light based on their size, they can be used to observe the transfer of material between cells. "...

Transport System Smuggles Medicines Into Brain

... owners because of their vibrant colors. But those colors may mean more to parrots than what meets the eye. ... researcher has uncovered the chemistry behind the colors of parrots, describing on a molecular level what is responsible for their bright red feathers. The ...

ASU researchers finds novel chemistry at work to provide parrot's vibrant red colors

... owners because of their vibrant colors. But those colors may mean more to parrots than what meets the eye. ... researcher has uncovered the chemistry behind the colors of parrots, describing on a molecular level what is responsible for their bright red feathers. The ...

Yellowstone microbes fueled by hydrogen, according to U. of Colorado study

...ght to them."Spear explained that the hot springs' colors are the result ofinteractions between minerals and...bes living in the pools.Hotter water usually shows colors from minerals, and cooler water playshost to photosynthetic pigments."Based on what I've seen in thi...

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