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Tag: "present" at biology news

'Best of both worlds' -- Targeting a single gene could inhibit bone decay and stimulate bone growth

...ture activities of even higher levels and who also present exemplary models for the academic community. Choi, who is originally from Seoul, South Korea, has been at the University of Pennsylvania since 2001. ...

Using nature's most primitive anti-viral defense system to find new approaches to cancer research

...m from viruses. This system, called RNAi, is still present today in humans, plants and animals. Recently, we have learnt how to harness this anti-viral system, so that we can use it to silence the function of any normal or mutant gene at will. This new technology has the potential to change forever the way r...

Seals protect brain, conserve oxygen by turning off shivering response on icy dives

...ply to the brain, Folkow explained. Folkow will present a second study on hypoxia, involving diving birds, at the conference. The study "Neuronal hypoxic tolerance in diving birds and mammals," examines how diving birds and seals preserve brain cell function in the face of oxygen deficits. The study is by...

New system could drastically reduce herbicide use

...nd two different grad students worked with Tian to present a paper on the robot at the Annual International Meeting of Agricultural and Biological Engineers this July in Portland, Oregon. Hong Young Jeon, a PhD candidate in agricultural and biological engineering, and Nathanael Gingrich, a master's studen...

Researchers discover that sheep need retroviruses for reproduction

...etroviruses, known as endogenous retroviruses, are present in the genome of all mammals, including humans. Consequently, endogenous retroviruses can be considered remnants of ancient retroviral infections, Spencer said. Many scientists believed these endogenous retroviruses were junk DNA, he said. "Ind...

An artificial cornea is in sight, thanks to biomimetic hydrogels

...al Society, chemical engineer Curtis W. Frank will present a novel biomimetic material that's finding its way into artificial corneas. It's a hydrogel, or polymer that holds a lot of water. That material may promise a new view for at least 10 million people worldwide who are blind due to damaged or diseased ...

Scientists find new way to manipulate DNA

...a new way that resolves some issues that have been present for 40 years," Solomon said. The experiments that yielded the prevailing scission theories, Solomon said, did not take into account turbulence in the flow that occurred during the experiments, and how that turbulence attributed to polymers breakin...

Novel regulatory mechanism identified for key tumor suppressor p53

...l. "You can imagine that if the p53 protein were present at all times and able to bind to DNA, cells would be in big trouble," Berger explains. "They wouldn't be able to divide, and they'd die. We think this new mechanism may be a way for the cell to keep p53 turned off but present, ready to be activated i...

Engineer ramps up protein production, develops versatile viral spheres

...ssion where Swartz receives the award he also will present one of the most recent innovations in his lab, the cell-free production of engineered viral capsids. The capsids are based on the outer shell of a naturally occurring virus that infects E. coli bacteria. They are formed when 180 copies of the same pr...

Squid-inspired design could mean better handling of underwater vehicles

... professor of aerospace engineering sciences, will present these and other details at the American Geophysical Union's annual fall meeting Dec. 11-15 in San Francisco. A global network of scientists, the AGU describes its mission as the advancement of terrestrial, atmospheric and space research aimed at ben...

Does missing gene point to nocturnal existence for early mammals?

... constriction." Although the melanopsin gene is present in all vertebrates, the version in mammals was unusually different to that found in fish, amphibians and birds. "At first, we put this genetic anomaly between mammals and other vertebrates down to evolutionary differences," said Dr Bellingham, who...

MIT's molecular sieve advances protein research

...t. These include the "biomarker" proteins that are present when the body has a disease. By studying changes in these biomarkers, researchers can identify disease early on, even before symptoms show up, and potentially develop new treatments.To date, the Ogston sieving model has been used to explain gel elect...

Particle size matters to bacteria ability to immobilize heavy metals

...ers, as well as groundwater," said Bose. He will present the research at the 232nd National Meeting of the ...aracterized. "Nano particles of iron oxides are present everywhere and, due to their small size but large surface area, they provide bacteria a large amount...

Detecting microalgae in coastal waters

... that 'see' chlorophyll a, a plant pigment that is present in all algal species. However, these tools are less effective in turbid coastal waters and do not identify alternative pigments, so cannot distinguish between different types of algal species. The researchers will build on a previous CICEET projec...

Poor athletic performance linked to vitamin deficiency

...air and maintain higher levels of lean tissue mass present in some athletes and individuals may all affect an individuals B-vitamin requirements, said Manore. "Many athletes, especially young athletes involved in highly competitive sports, do not realize the impact their diets have on their performance," s...

The first tree genome is published: Poplar holds promise as renewable bioenergy resource

... sequenced to date, approximately twice as many as present in the human genome (which has a genome six times larger than the poplar's). The research team identified 93 genes associated with the production of cellulose, hemicellulose and lignin, the building blocks of plant cell walls. The biopolymers cellulo...

Altered perception of reward in human cocaine addiction

...ify as a disorder of the brain." Goldstein will present details of these studies at a press conference on neuroscience and addiction at the Society for Neuroscience (SfN) annual meeting in Atlanta, Georgia, on Sunday, October 15, 2006, 2 to 3 p.m., and at a SfN symposium on Wednesday, October 18, 8:30 a.m...

For crickets, parasitic flies can stop the music

...sons. In North Florida, the parasitic flies are present only in fall, never in spring. The researchers?findings seemed to agree with this schedule. More of the males sang in the spring than in fall, with 75 percent of the captured males, for example, singing in spring and 43 percent in fall. To test ho...

Two central mysteries in genome inheritance solved at UCSD

...hat forms the chromosome-spindle connection and is present in even the simplest single-celled organisms, indicating that its role in genome distribution is ancient and widely conserved. Identification of this protein group provides scientists with new drug targets in cancer cells. "Right now, drugs used in...

High HPV concentrations combined with smoking significantly raise risks of cervical cancer

... said Gunnell. "Clearly, both exposures need to be present at the same time for there to be interaction. "Our study would imply a synergistic action between HPV and smoking that would greatly increase the likelihood of women developing cervical cancer if they are HPV-positive smokers. This would put them ...

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