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Tag: "true" at biology news

Jefferson scientists find aging gene also protects against prostate cancer development

...te SIRT1,?Dr. Pestell says. “The discovery is a true breakthrough in our field,?says Chawnshang Chang, Ph.D., George Hoyt Whipple Professor of Pathology and Laboratory Medicine and professor of urology and of biochemistry at the University of Rochester. Dr. Pestell and his co-workers also found a...

Too mellow for our predatory world

..., island life has certain advantages. This is also true for the marine iguanas. For millions of years they have lived without natural predators. In the course of evolution they have become excessively tame. Hundreds of reptiles doze, spread-eagled, on black lava rocks, soaking up the sun - behaviour that ...

Cigarette smoking impedes tendon-to-bone healing

...eople age and more common in the dominant 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 week...

Quality not quantity important for immune response to HIV

...er, for reasons that are unclear, the opposite was true for responses to the Env proteins, where a stronger response was associated with a higher viral load ?in other words, worse control of HIV." Professor Goulder believes these findings may have implications for the development of a HIV vaccine. ...

World's smallest cancer detection device

...chnology and nanomedicine. "This NCI grant marks a true milestone for this partnership, which combines the unique expertise and resources of both institutions to apply nanoscale principles to detect diseases and develop treatments for them," says Ira M. Millstein, chairman of the Einstein Board of Oversee...

Edge density key to controlling gypsy moth spread

...lishment of permanent populations. This is also true at the edges of the population area. If the population density is low, the Allee effect prevents growth across the boundaries. The model showed that no pulsed expansion exists for populations unaffected by the Allee effect. However, when the it is a...

Key to acute lung injury lies in Ang2 protein

...dema." Bhandari said the study is an example of true bench-to-bedside translational research. "All the work was initially done on mice in which we found that the Ang2 protein was involved in HALI," said Bhandari. "We also defined how the protein creates lung injury and then we showed its clinical relev...

Small, smaller, smallest -- The plight of the vaquita

...which came back from low numbers and now represent true conservation success stories. Similar efforts are needed urgently for the vaquita, a small animal living in a small area with a small, and ever-smaller, population....

Sex and the heart: It's not what you think

...ls of blood pressure and cholesterol are no longer true in the U.S. population over 60 years of age." Crimmins and her colleagues examined changes between 1988 and 2002 in indicators related to cardiovascular disease. The research team used data on men and women 40 and older from two broadly representati...

Rearing an army to save wheat

...rom other systems suggests that this is definitely true in natural settings. However, the goal of the research is to find ways to increase the supply of parasitoids from a controlled system to Montana wheat growers. "Right now, the number of people wanting parasitic wasps far out-number what we can del...

Researchers identify neurons that assign value during learning

... positive or negative values during learning holds true for much more complex mammalian brains as well. ...

Peering into the shadow world of RNA

...n to suppress their activity. This is particularly true in the egg and sperm, where maintenance of the genome’s integrity is critical.? One of these suppression mechanisms involves short interfering RNA, or siRNA, a form of non-coding RNA that specifically targets and inactivates the stretch of DNA from...

Preliminary study finds holographic imaging system promising for cancer treatment planning

...the body revealing the exact location of tumors in true 3D space. A study led by Rush, which also inclu...Systems "PerspectaRAD" Spatial 3D system generates true 3D imagery with a full 360-degree field of view. Using high-speed electronics, a CT scan is projecte...

More species in the tropics because species have been there longer

...cations: "If the pattern we see in treefrogs holds true for most other groups, then the tropics may have more ancient lineages and more genetic diversity per species than temperate regions. So there may be far more loss of diversity going on as we lose tropical rainforests than would be suggested by the n...

Cloned mice created from fully differentiated cells, a milestone in cloning research

...f what they found with hematopoietic cells will be true for cells of other tissue types, the investigators say their current studies may have important implications for regenerative medicine, since the findings suggest the potential of adult stem cells in this arena may be more limited than previously tho...

Human preference for other species could determine whether they survive

... with people, especially right now. But that's not true of 99.9 percent of the species out there," Stokes said. "Even the penguin species I found to be among the least appealing to people are tourist attractions." Tops on the list are the Emperors, featured in the film "March of the Penguins," and the...

Ape gestures offer clues to the evolution of human communication

...vocal signals similarly, but the same did not hold true for the manual gestures. Rather, the researchers found both within and between species the manual gestures were less closely tied to a particular emotion and, thereby, serve a more adaptable function. For example, a single gesture may communicate an ...

Drug treatment improves learning in mice with Down syndrome symptoms, Stanford/Packard study shows

...ttest, too much caffeine can backfire. The same is true with high doses of PTZ, which can cause seizures. In fact, after some brief, inconclusive studies on cognition enhancement in elderly or mentally impaired people in the 1950s, PTZ has been primarily used for the study of epilepsy in animals. In 1982 ...

Turning a cellular sentinel into a cancer killer

...p," said Lowe. "And I think the challenge—which is true for any therapy where you can get resistance—is to come up with combination treatments that take out enough of the cancer cells early on that there aren't enough variants left to get around the p53 pathway." Jacks added that "the main point is that...

'Terror bird' arrived in North America before land bridge, study finds

...also be moved after death, further confusing their true age. MacFadden's approach compares bones of disputed age with those of known age. If the chemistry matches, the bones are of the same age irrespective of their final resting place." David Gradstaff, a professor and chairman of the geology departmen...

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