low 2 3

Tag: "low" at biology news

Emergence of cancer as major cause of childhood death in developing countries is not being adequately addressed

...providers.?/p> The authors argue that even the low level of development that exists in some parts of the world is not an insurmountable obstacle to establishing a productive twinning relationship. A program that concentrates on education, training and the treatment of the most responsive cancers coul...

Test for early detection of prostate cancer shows promise

...11 of 12 prostate cancer patients (92 percent) and low in all of the healthy individuals. Only two bladde... cancer, while as many as 15 percent of those with low PSA values were found to have prostate cancer as detected by biopsy, according to Getzenberg. Large...

Biologists discover why 10% of Europeans are safe from HIV

...h levels of the gene in Scandinavia and relatively low levels in areas bordering the Mediterranean. They have also been puzzled by the fact that HIV emerged only recently and could not have played a role in raising the frequency of the mutation to the high levels found in some Europeans today. Professo...

First North American Encapsulated Islet Transplant without Long-term Immune Suppression into a Patient with Type 1 Diabetes

...h levels of the gene in Scandinavia and relatively low levels in areas bordering the Mediterranean. They have also been puzzled by the fact that HIV emerged only recently and could not have played a role in raising the frequency of the mutation to the high levels found in some Europeans today. Professo...

Brain Scans Reveal How Gene May Boost Schizophrenia Risk

...ns optimally when dopamine activity is neither too low nor too high, corresponding to the top of an upside-down "U" (see diagram below). In this model, people with val fall on the left (rising) slope, with lower dopamine levels, while those with met fall on the right (falling) slope, with higher dopamine...

Shift of weather patterns necessitates rethinking of reforestation methods

...r-plant in the spring because of the likelihood of low survivability. With containerized seedlings, the survival rate is higher and landowners can plant fewer trees to get the same stand density. On wet years, when a high percentage of bare root seedlings do survive, landowners find themselves paying fo...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...elephants emit a variety of infrasounds--calls too low in pitch to be heard by most humans. In 1989, Payn...lled above ground so researchers could monitor all low frequency sounds in the air. "The results of our 2002 study showed us that elephants do indeed detec...

Physiological effects of reduced gravity on bacteria

...n resistance and the ability to persist under very low nutrient conditions), may contribute to the success of these water system bacteria. ...

Insight into DNA's 'weakest links' may yield clues to cancer biology

...d to break." Organisms normally exhibit extremely low rates of mutation and chromosomal rearrangements. ...critical in DNA duplication. Yeast with abnormally low levels of DNA polymerase exhibited higher frequencies of chromosomal loss and aberrations than norma...

Chromosome Deletion Predicts Aggressive Neuroblastoma

... abdomen or chest. Some cases of neuroblastoma are low risk, and resolve after surgeons remove the tumor. Other cases are more aggressive, and are more likely to resist initial treatment, or to cause a relapse. Identifying the correct risk level allows doctors to treat aggressive cancers appropriately, w...

Measuring hormone cuts antibiotic use in half in pneumonia patients

...levels. Fifteen percent of those patients had very low procalcitonin levels, and were presumed to have viral pneumonia; they were not given antibiotics. The remaining 85% had high levels and were started on antibiotics. The researchers measured their procalcitonin levels four, six and eight days later, a...

Biochemists report discovery of structure of major piece of telomerase; implications for cancer

...urally because of its size and complexity, and its low level in normal cells. "This is a unique RNA structure, with distinctive features of RNA folding," said Feigon, who determined the structure with Theimer and Blois using nuclear magnetic resonance (NMR) spectroscopy. Mutations in the RNA are associ...

Marine sponge yields nanoscale secrets

...natural biological catalyst does to make silica at low temperatures. The UCSB scientists are already tak...scoveries are significant because they represent a low temperature, biotechnological, catalytic route to the nanostructural fabrication of valuable materia...

One gene links newborn neurons with those that die in diseases such as Alzheimer's

...s Alzheimer's and Parkinson's: both have unusually low levels of a protein called UCHL1. "It would be ir...s. But instead, one gene turned up in consistently low levels. The gene was UCHL1. "We expected UCHL1 would be high in all kinds of neurons," says first ...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...ing special regions in the world where nitrogen is low relative to other nutrients that phytoplankton need to grow, and the Gulf of California is one of those regions. Our study is the first to show that the addition of human-caused nutrients in these special areas causes extra blooms of phytoplankton." ...

NSAID drug protects against intestinal tumors in mice, despite poor diet and gene losses

... (p27 and APC) and were fed a diet high in fat and low in calcium and vitamin D. "It appears that p21 ac...d with a corn-oil rich diet (labeled AIN-76A, also low in calcium and vitamin D) formed tumors whereas knock-out mice fed with their regular chow (which wa...

MUHC researchers make cancer target breakthrough

...ive in reducing cancer tumors when administered in low doses and in combination with established cancer d...hat works in harmony with other drugs, and in such low doses, is a significant breakthrough in cancer research." ...

Findings have implications for tracking disease, drugs at the molecular level

...e gold particles can be prepared easily, have very low toxicity, and can readily be attached to molecules of biological interest, said Fourkas. In addition, the laser light used to visualize the particles is at a wavelength range that causes only minimal damage to most biological tissue. The findings wi...

Secret of smallpox's success may lead to bioterror cure

... vaccinia virus and then is vaccinated with a very low dose of the mutant virus ?only 100 virus particles ?the mouse gets sick but eventually recovers. The more mutant virus the mice are given, the less sick they become. "If you give them a million particles, they don't even get sick -- the animals stay...

Finding hidden invaders in a Hawaiian rain forest

...cano, the native Metrosideros tree typically has a low concentration of nitrogen in its leaves ( .6% to .8%), while the invading Canary Islands tree has relatively high nitrogen concentration (1.5% to 1.8%), because it can acquire nitrogen from the atmosphere. "The high leaf nitrogen associated with the...

1 2 3 4 5 6 7 8 9 10