rise 2 10

Tag: "rise" at biology news

Novel protein complex enables survival in hostile environment

...ot know whether the splitting of the fsr gene gave rise to the sulfite reductases of the bacteria and ener...of time, a loss of the sulfite reductase gene gave rise to a sulfite-sensitive methanogen. Similarly the loss of certain key genes gave rise to the archaea ...

Ancient trans-Atlantic swarm brought locusts to the New World

...he desert locust flew across the Atlantic and gave rise to a diverse group of New World species. "If we we...The team found that the desert locust lineage gave rise to the more than 50 Schistocerca species found in the western hemisphere. ...

Multiple genes permit closely related fish species to mix and match their color vision

...hs of light and isolated the seven genes that give rise to the pigment proteins. The seven cone types have maximum sensitivities ranging from the red end of the spectrum right through to the ultraviolet--light outside the range of human sensitivity. The researchers showed that in order to tune its color v...

New view of cancer: 'Epigenetic' changes come before mutations

...erent properties of the progenitor cells that give rise to the primary tumor, Feinberg notes. These properties do not necessarily require other mutations to occur. "Greater attention should be paid to the apparently normal cells of patients with cancer or those at risk for cancer, as they might be cruc...

Nanoparticles, nanoshells, nanotubes: How tiny specks may provide powerful tools against cancer

...tance. IGF1R-laden MCF7 cells showed an eight-fold rise in conductivity. "When the antibody proteins ?which are specific to the cell surface receptor (IGF1R) of the cancer cell and are attached to the nanotube ?bind to the cancer cell surface, they produce a specific change in the electrical conductivi...

'Acid rain' and forest mass: Another perspective

...tabling and grouping together of herds, have given rise to the concentration of ammonia emissions in certain zones. This compound, deposited close to the sources of emission, is able to react with the acidic ions deposited at the same time. Subsequently, certain bacteria are capable of oxidising the compo...

NIAID researchers show how promising TB drug works

...h actively dividing and slow-growing M. tb, giving rise to optimism that the compound may be useful in treating both active and latent TB. (For information about the first clinical trial of PA-824, see June 14, 2005, NIAID press release: http://www3.niaid.nih.gov/news/newsreleases/2005/tb_pa_824.htm .) ...

HIV mortality in India drops with introduction of generic antiretroviral therapy

...003. The drastically lower cost of ART sparked a rise in the number of people seeking--and obtaining--treatment for their infection. Researchers in India and Rhode Island found that in 1996, just 13 percent of the Indian patients who qualified for ART were able to afford it. But that number rose to 22 p...

Researchers discover why melanoma is so malignant

...y embryonic cluster of cells that eventually gives rise to a variety of cell types in the adult, including dermal melanocytes. In this early embryonic stage, Slug enables the neural crest cells to travel, and then settle, throughout the developing embryo. "Slug is a key component of the neural crest's a...

Once-dreaded leprosy 'replaced' by tuberculosis, say researchers

...ad leprosy. TB, meanwhile, was increasingly on the rise as people in the Middle Ages migrated to urban centers, where crowding and poor sanitary conditions provided a fertile breeding ground for the spread of the killer disease. Today, tuberculosis, though curable, is still a major, long-term, epidemic d...

Sudden change in social status triggers genetic response in male fish, study finds

...the tank and put him in a situation where he could rise and become dominant," Fernald says. "Because he was in a new situation, it took several days before he began to change physically and behaviorally." But how would a subordinate male respond if the dominant fish were to suddenly disappear? To find ...

Restaurant seafood prices since 1850s help plot marine harvests through history

...early stage, the research already shows a dramatic rise in the price of abalone coincident with the collap...arely offered but lobster salad was common. Prices rise faster than inflation starting in the 1860's, a trend continued until the mid/late 1920's. In the 19...

Amphetamines reverse Parkinson's disease symptoms in mice

...isorders and Stroke. These figures are expected to rise as the average age of the population increases. Sy...f dopamine, which cannot be recycled, precluding a rise in dopamine as the possible mechanism. "Taken together, the findings indicate that Ecstasy can impr...

Many cats unaffected by catnip, C&EN reports

... if both parents have the sensitivity, the chances rise to at least three in four, she says. There is a chemical cause for the response to catnip (Nepeta cataria), available in pet shops as a raw herb or essential oil, says McDaniel. Nepetalactone is one of several compounds known to set off the characte...

On a wing and a prayer - Alaska researchers seek clues to bird flu

... possibility that the present situation could give rise to an influenza pandemic in humans akin to the 1918 "Spanish Flu." On Friday, WHO warned that China is not rigorously following up on a recent deadly H5N1 outbreak among wild birds. The 1918 influenza pandemic killed more than 500,000 people in the ...

Picky female frogs drive evolution of new species in less than 8,000 years

...at there has been reinforcement and that has given rise to a new species based on very strong female choice." As a comparison, they looked at a second contact zone on the border between north and south, where frogs were not isolated from either lineage. "Reinforcement does not appear to occur at the mor...

U-M scientists discover identifying markers for primitive blood-forming stem cells

...n mice. Called hematopoietic stem cells, they give rise to all the different types of specialized cells found in blood. By reading the bar code, scientists can separate stem cells from their more advanced descendants ?progenitor cells that already are committed to becoming one type of blood cell. The sec...

Oceans turning to acid from rise in CO2

... in hydrogen ions. If emissions of CO2 continue to rise as predicted by the Intergovernmental Panel on Climate Change's IS92a scenario, there will be another drop in pH by .5 units by 2100, a level that has not existed in the oceans for many millions of years. In addition, the changes in the oceans' chemi...

Prescription pain patch abuse blamed for increase in deaths

...deaths from overdosing on fentanyl has been on the rise during the past few years - not just in Florida but also nationwide, researchers found. "We have seen an increased use and abuse of the patch form of fentanyl for the past five years or so," Goldberger said. "This is a recent finding related to the ...

Molecular Partners Required For Appropriate Neuronal Gene Repression

...dendrocyte progenitors. These precursor cells give rise to all of the mature oligodendrocytes that make myelin throughout life. Back's lab provided the team with tissue cultures of immature rat oligodendrocytes. The researchers then applied HA to these cells which indeed kept the immature cells from matu...

1 2 3 4 5 6 7 8 9 10