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Tag: "hard" at biology news

Scientists identify 36 genes, 100 neuropeptides in honey bee brains

...ing range of shapes and sizes, and are notoriously hard to predict from a genome alone," Sweedler said. "Even if you find a gene, it is hard to say what particular peptide it will create, because neuropeptide precursors undergo extensive pos...

Trotting with emus to walk with dinosaurs

...logical Museum in Laramie, Wyo. That makes it very hard to connect the tracks to a particular dinosaur. An...sing over the left. That seemed pretty strange and hard to explain on the face of it. But after watching emus, it became clear that the crossing over is par...

Ground spider diversity studied in research project

...s. "Her enthusiasm for spiders was backed by the hard work required for her to become proficient in their identification and to study their biology," Harris said. In all of her collecting and studies, Henderson has never been bitten, although she has had a skin irritation caused by a rosehair tarantul...

How many genes does it take to learn? Lessons from sea slugs

...imal's behavior," Walters said. "In a mammal, it's hard to identify and manipulate a single cell and know what its function is. With Aplysia, there is direct access to whatever cell you're interested in with just a micropipette. As a scientist who wants to know which molecules are present in Aplysia for e...

Steep oxygen decline halted first land colonization by Earth's sea creatures

...ood and when the oxygen level dropped it had to be hard for the vertebrates coming out of the water. I wonder if there is a minimum level of oxygen that has to be reached or nothing could ever have gotten out of the water." Dinosaurs first appeared in the last part of the Triassic period, about 230 mil...

Living laboratory found on shoreline statues

...ally found on sandy beaches such as Crosby but the hard surface of the sculptures has provided them with an ideal habitat for settlement as well as offering scientists an important insight into factors influencing colonisation. The installation of the cast iron figures - each a replica of the artist'...

Dinosaurs -- stones did not help with digestion

... you do if you do not have good teeth, and food is hard to digest? Some herbivorous birds which have a toothless beak, such as ostriches, solve the problem with what is known as a gastric mill. Their muscular stomach is equipped with a layer of horn and contains stones which help to break up, crush and th...

Cigarette smoking impedes tendon-to-bone healing

...ominant arm. The true incidence of the injuries is hard to determine because between 5 percent and 40 percent of people who may have a torn rotator cuff have no accompanying shoulder pain. What surgeons do know is that rotator cuff repairs can fail in the days and weeks after surgery. Some studies have...

Hospital-acquired infections -- Inevitable?

...drives the current epidemic. "Despite all of our hard work, medical care can never be error free," commented Dr. Nash about the widespread beliefs about HAI. "What we must strive for is care that is harm free. Changing our mindset will go a long way toward restoring the faith of the public and improving...

Fighting like a girl or boy determined by gene in fruit flies

...up on their back legs and snap their forelegs down hard ?sometimes nailing an opponent that is slow to retreat. The flies undergo a major role reversal when the male and female gene versions are switched. With a feminine fruitless gene, male flies adopt more ladylike tactics, mostly the head butt and s...

Distinguishing friend from foe in the battle against cancer

...es, but they are actually the result of decades of hard work. "We have been working for 35 years looking at mechanisms underlying formation of cancer cells," says Hunter, an American Cancer Society professor in the Molecular and Cell Biology Laboratory. "We've made huge progress identifying specific eve...

New system could drastically reduce herbicide use

... a full-blown Windows computer with an 80-gigabyte hard drive and a wireless connection to the Internet," said Gingrich, "so the amount of information we can collect is virtually unlimited." ...

Study highlights new and cheaper way to treat heroin addiction

...for those who can’t tolerate methadone, or find it hard to deal with the stigma of having to take their dose ?sometimes every day ?in a pharmacy. It is also much cheaper." The study, the first of its kind in the world, assessed 235 people requiring treatment for opiate dependency in Edinburgh and found...

Ancient ape ruled out of man's ancestral line

...y a distant cousin. His remains are cemented in hard mineral deposits in the Sterkfontein cave complex which has yielded a number of other ancient finds. It is thought he either fell down a shaft or somehow got trapped in the cave and died there to be covered by the sediment layers from which he is now...

From a lowly yeast, researchers divine a clue to human disease

...s, long RNAs from multiple genes are confusing and hard or impossible for the cell to use. "It really messes up a lot of things, not just the read-through gene but also adjacent genes," Brow says. In other cases, Sen1 stop signs near the beginning of some genes normally prevent RNA polymerase II from m...

Powerful genome ID method extended to humans

...nt abnormalities. "That's something that's very hard to detect" by conventional sequencing, Green said, adding that sequencing can simply miss part of a genome. Optical mapping, by contrast, can estimate the absolute length of a genome and quickly detect differences in length and structure between t...

Mayo researchers discover HIV dependence on a human protein

...c program, like a tiny file burned onto a computer hard drive. While patients are kept healthy when those copies are "suppressed" with multiple daily antiviral medicines, they are never cured. Stopping the medicines even briefly lets HIV repopulate the body with many millions of copies, like a computer vi...

Mysterious 'neural noise' actually primes brain for peak performance

... out a diagnosis, and right now our lab is pushing hard to find out exactly how that noise makes all these different aspects of being human possible." Pouget's work still has its skeptics, but this, his fourth paper in Nature Neuroscience on the topic, is starting to win converts. "If you ask me, this...

Hopkins scientists link immune response to 'ghost' parasites and severely congested sinuses

...e inflammation, which, Lane says, are particularly hard to treat. In the surgery, a thin, tube-like endoscope is inserted into the nose, with a camera attached to provide a close-up view of the nasal and sinus passages. Slender surgical instruments placed alongside the endoscope allow surgeons to cut...

Fishy cooperation

...oll. It also offers quantification, which is truly hard to achieve in the field, of the tendencies involved in this mutually beneficial arrangement. The investigators were able to demonstrate that the two predators seek each other's company, spending more time together than expected by chance. They also f...

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