Tag: "hairs" at biology news

Research uncovers new treatment target for cystic fibrosis patients lung infection

...bacteria without being swept clear by tiny beating hairs known as cilia. Last year, their research showed that too little salt in the lungs contributed to the stickiness and chronic infections....

Scent of a lobster

...Berkeley and her colleagues are studying the small hairs on the lobsters olfactory antennules. Theyve discovered that these hairs can capture odors at very resolution, but theyve yet to figure out exactly how that information get...

MATH1 signal heralds process of differentiation in intestinal lining

...it was shown to be critical to development of tiny hairs in the ear that make it possible for people to hear. It was a surprise for us to find it expressed in intestinal cells, said Zoghbi, who also is a Howard Hughes Medical Institute investigator. It tells us is that this gene is important in a varie...

Lobster sniffing: how lobsters' hairy noses capture smells from the sea

...gging them through the water to bring chemosensory hairs on the ends of the antennules into contact with od... of the split ends of each antennule is a brush of hairs sensitive to chemicals. The question the researchers asked is whether the incessant flicking of ante...

Scientists study how the lobster's nose knows

...ong antennae covered with arrays of odor-sensitive hairs - to sniff out odors. The findings, which will be ...to contact with the antennule`s aesthetascs - tiny hairs arrayed along the length of the antennule and covered with odor-sensitive cells. The researchers fou...

Writing in Nature, scientists identify genes key to differentiating top from bottom in plant leaves

...s, the upper surfaces are also marked by minuscule hairs called trichomes. While the variations might appear inconsequential to the untrained eye, these differences foster the distinct and very important roles the two sides of the leaves play in plants, said R. Scott Poethig, senior author on the Penn Na...

Perfume lures flies into trap

...smell. Flies smell with special cells in olfactory hairs on their antennae and palps. When olfactory molecules bind to the olfactory cell, tiny electrical impulses are transmitted to the brain. An electrode placed at the base of the hair can measure these impulses and thus determine the reaction to an olfa...

Neuroscientist studies brains of bizarre-looking mammals

...uch-sensors in one organ, the mole rat has sensory hairs spread all over its body, including its tail. Mole rats also have an exceptional set of front teeth. They have four incisors that are located entirely outside of their mouththey close their mouth tightly when they are using their teeth for digging. T...

Extinction claims a furry friend

... a tree trunk. Any animal entering the tube leaves hairs attached to the tape, and species can beidentified by microscopic examination of a single hair. Dr Hornsby used 900 of these hair tubes in his survey, after trialling them with captiveanimals. "We spent a lot of time developing the design of the tube...

Ancient tick found in New Jersey leaves experts guessing

... the three dozen or so tiny bristle-like hairs aligned in two rows on th...s normally have far fewer hairs over their entire body. But this tick is much closer to what I anticipate a...

Potent new compound from blue-green algae may help treat, elucidate nerve disorders

...e found a collection of cyanobacteria growing like hairs off the sea floor. We brought several liters of it back to Oregon for testing." Marine cyanobacteria, also called blue-green algae, are most familiar to many people as "pond scum." Back in the laboratory, Gerwick's team ground up samples of the s...

Tailoring new cotton genes for industry

...s with Dr Orford on the project. " These are leaf hairs that, in their early stages, closely resemble the early development of cotton fibres. By isolating and characterising cotton genes that correspond to the Arabidopsis genes, we hope we can find out how cotton fibres are initiated," he said. The commo...

UC Berkeley study shows gecko foot hairs are amazing dry adhesives

... across ceilings thanks to two million microscopic hairs on their toes that glom onto surfaces in a way tha...d that the combined adhesive force of all the tiny hairs lining the gecko's toes is 10 times greater than the maximum force reportedly needed to pull a live ...

Integrative approach to studying penguins, cockroaches and little hairy noses makes comparative biomechanics group at UC Berkeley the nation's best

... food webs -- use appendages bearing rows of small hairs to move about and capture food. Crabs and lobsters...r hand, flick antennules bearing tiny chemosensory hairs to sniff the water. "All of us in the biomechanics group are at the interface between biology and e...

Jefferson scientists use gene repair technique to change albino mice hairs to black

... technique to genetically change white albino mice hairs to black. The technique has not only turned hairs black, but has showed that such changes are stable and long lasting in skin cells. The work hold...

Gene protects tubby mouse strain from hearing loss

...malhearing results when sound waves cause the tiny hairs to oscillate, with themovement transmitted as electrical impulses through the hair cells to the brain.Hearing ability in mice is measured with a technique known as auditory brainstemresponse (ABR). In their experiment, the Jackson Lab researc...

Gene triggers formation of sensory cells in the ear

...hem in place within theinner ear. The microscopic hairs that sprout from such cells cover inner ear surfaceslike wheat in a Kansas field. When sound or head motion creates ripples acrossthe array of hairs, that motion is translated into nerve impulses that the braininterprets as sound or movement. Zoghb...

Knockout Mouse Reveals Genetic Mechanism In Defective Mammalian Ear Development

...mal hearingresults when sound waves cause the tiny hairs to oscillate, and the movement istransmitted as electrical impulses through the hair cells to the brain. Drs. Kelley and Gridley and their colleagues found that mice withoutJagged2 exhibit a significant increase in hair cell density compared ...

UNC Researchers Develop New Way To Measure Acid Level Of Body Fluids

...etal sensor -- roughly the thickness ofthree human hairs -- that can measure the acidity (pH) of chemical solutions,including body fluids. A report describing the invention, including successful laboratory tests inanimals, is published in the December issue of Analytical Chemistry. "This particular electro...

Clever Chemistry Protects Beetle Babies

...hemicroscope, the pupae are seen to have fine body hairs topped by glisteningdroplets of chemicals. A ser...lectron microscopy) picture of E. borealis pupal hairs on the cover of Science . . The tiny insect pioneered anendeavor in which human chemists, with the...

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