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Tag: "often" at biology news

Alarm pheromone causes aphids to sprout wings

Chemical communication within insect species is often much more sophisticated than expected. When aphids are attacked by predators such as ladybird beetles, they release an alarm pheromone, (E)-â-farnesene, that has long been known to cause other aphids to walk around or drop from the plant. In a paper...

Building a protein name dictionary from full text: a machine learning term extraction approach

...rely on pre-existing lexicons of biological names, often extracted from curated gene or protein databases. This is a limitation, because such databases have low coverage of the many name variants which are used to refer to biological entities in the literature. Results We present an approach to recognize ...

NHGRI targets 12 more organisms for genome sequencing

...or cardiovascular disease studies; the LEW strain, often used in studies of transplants and immune response; the BB strain, used in studies of diabetes; the FHH strain, also used for cardiovascular studies; the DA strain, used for studies of arthritis and cancer; and the SHR strain, used in studies of hype...

Primates on the brink

...pets-notably orangutans and gibbons -they are most often hunted and traded for use in traditional medicines. Most of this trade appears to be international, primarily to China." As "Flagship Species" and our closest living relatives, nonhuman primates are important to the health of their surrounding ecosy...

Chimp genome reveals a retroviral invasion

...s for proteins. Much of the rest of our genomes -- often referred to as junk DNA -- consists of retroelements: genomic elements that are transcribed into RNA, reverse-transcribed into DNA, and then reinserted into a new spot in the genome. Human endogenous retroviruses make up one class of these retroeleme...

Insects, viruses could hold key for better human teamwork in disasters

...t responders have to rely on local information and often work in the absence of global information." "An emergency-response strategy based on complete global information being made available instantly to all responders is fundamentally flawed," Contractor said. "Instead, we need to develop a strategy that...

Human Eggs Can Develop From Ovarian Surface Cells In Vitro

...occurrence of fetal genetic alterations, which are often associated with an advanced maternal age. In addition, a colonization of premenopausal ovaries with younger oocyte and granulosa stem cells may establish a new cohort of primary follicles. This may result in a 10- to 12-year delay of the onset of nat...

Penn Researchers Use Robotic Surgery

...throat, surgery is a frequent course of treatment, often leading to speech and swallowing dysfunction and e... voice box." For head and neck tumors, treatments often involve a combination of surgery, radiation therapy, and chemotherapy. In many cases, surgery offers...

At the molecular level, the predator is the prey

...nges in TTX binding." The evolution of new traits often happens one of two ways, either by altering existing genes or by changing patterns and amounts of expression. The current Nature report shows that snakes' ability to detoxify TTX involves changes in the sodium channel gene. "That is generally the st...

Two new retroviruses—transmitted from animals—identified

...throat, surgery is a frequent course of treatment, often leading to speech and swallowing dysfunction and e... voice box." For head and neck tumors, treatments often involve a combination of surgery, radiation therapy, and chemotherapy. In many cases, surgery offers...

Embryonic Stem Cells Treated With Growth Factor Reverse Hemophilia In Mice: UNC Researchers

...he Albert Lasker Award for Basic Medical Research, often called "America’s Nobel." In the study, ES cells were treated with fibroblast growth factor for seven days prior to injection. As expected, this resulted in ES cells differentiating into early endoderm like precursors, which the researchers named "p...

Rabies spread speeds up

... rabies. In 1990, raccoons topped the list of most often reported rabid mammal. Controlling the spread of rabies depends on predicting the spatial dynamics of the disease - where new outbreaks might occur and how the virus might spread. In a new study reported in the freely-available online journal PLoS Bi...

Scientists use manufacturing methods to reconstruct mastodon

...logists rarely find complete skeletons, so they're often faced with the task of creating realistic substitu...t-like animals and hauled off whole hunks of meat, often with the bones, says U-M mastodon authority Daniel Fisher, a professor with joint appointments in th...

Atmosphere may cleanse itself better than previously thought

...been something of a blind spot for scientists, who often detect chemical reactions by perceiving the telltale light frequencies that certain reactions are known to emit or absorb. Many sources of OH radicals strongly absorb UV light, making them easily detectable. However, the weak absorptions in the lower...

Disabling gene defuses rheumatoid arthritis in mice

... likely to develop the disorder than men. Symptoms often occur in episodic bursts and may include morning stiffness, fatigue and joint and muscle pain. In severe cases, rheumatoid arthritis can damage cartilage, tendons, ligaments and bone, leading to joint deformity and instability. Rheumatoid arthritis ...

Researchers Closer To Helping Hearing-Impaired Using Stem Cells

...o stimulate the growth of the nerve cells that are often missing from the inner ears of patients with profound hearing loss. “Sonic hedgehog and retinoic acid are molecules found in embryonic tissues, but not in adult tissues,?said Dr. Hashino. “This suggests that treating marrow-derived stem cells with t...

Beneficial Beetles Battle Pesky Saltcedar

...e, river rafters or thirsty wildlife and livestock often can't get through dense thickets of saltcedar bushes or stands of pink-blossomed trees. ...

Shark attack worries? Driving to the beach is more deadly

... than a shark." He says when shark attacks occur, often they are accidental. "Humans are not a shark's preferred food choice," he says. "They don't regard the human shape as a prey item. Sometimes you hear reports of surfers having their boards hit by a shark, and it's probably because the board resembl...

New HIV drug candidate developed in Sweden

... than a shark." He says when shark attacks occur, often they are accidental. "Humans are not a shark's preferred food choice," he says. "They don't regard the human shape as a prey item. Sometimes you hear reports of surfers having their boards hit by a shark, and it's probably because the board resembl...

Agilent Technologies introduces advanced zebrafish, mouse microarrays for stem cell and developmental biology research

... than a shark." He says when shark attacks occur, often they are accidental. "Humans are not a shark's preferred food choice," he says. "They don't regard the human shape as a prey item. Sometimes you hear reports of surfers having their boards hit by a shark, and it's probably because the board resembl...

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