introduced 2 4

Tag: "introduced" at biology news

Worms know bad food when they smell it

...rms that had been grown only on E. coli were later introduced to pathogenic bacteria (either P. aeruginosa or S. marcescens ), they were just as likely to select the new, toxic food source as they were to stick with the safer choice. In fact, when the choice was between E. coli and S. marcescens, they m...

A resetting signal keeps circadian rhythm on track in Drosophila fruit flies

...ained researcher Dan Stoleru. "In this fashion, we introduced phase differences between them. It turned out that no matter the manipulation, the morning cells set the pace of the entire system, so that the rhythm always stayed on track." The study showed that the morning clock resets the evening clock every da...

Wild birds help to create human flu vaccine

...tional health agencies, congressional leaders have introduced legislation aimed at filling existing gaps in US p...," said Senator Joe Lieberman (D-CT), who recently introduced the Global Network for Avian Influenza Surveillance Act and has been working with congressional lead...

Carnegie Mellon U. transforms DNA microarrays with standard Internet communications tool

...ts with the specificity they need to weed out such introduced gene activation from fundamental gene activation pathways that form the hallmark of processes like cancer or immunity. To prove the effectiveness of this new method, Bar-Joseph studied the human cell division cycle. Considered one of the most import...

T-rays: New imaging technology spotlighted by American Chemical Society

... Rensselaer Polytechnic Institute. Twelve speakers introduced analytic applications of terahertz spectroscopy to the analytical chemistry community. T-rays are based on the terahertz (THz) region of the electromagnetic spectrum that is between infrared light and microwave radiation. Until recently, researchers...

MRSA use amoeba to spread, new research shows

The MRSA 'superbug' evades many of the measures introduced to combat its spread by infecting a common single-celled organism found almost everywhere in hospital wards, according to new research published in the journal Environmental Microbiology. Scientists from the University of Bath have shown that MRSA i...

Portable cocaine sensor developed at UC Santa Barbara

... this vast variance, there are drugs have not been introduced to the market because of the need for an immediate check of the blood level of the drug in order to prevent death. Plaxco explained that new drugs may be made available when this sensor is applied to this medical use. To create the sensor, the resea...

Swiss researchers develop all-in-one remote control gene expression tool

...netic manipulation ?either the transgenic material introduced by the lentivirus, or the gene silencing via RNA interference--can be switched on or off at will. An all-in-one tool like this ?efficiently combining techniques that each previously required separate delivery ?will likely see wide use in genetic res...

Computers to save unique type of American red squirrel

...population. Here, the reds' biggest threat is the introduced grey squirrel, which out-competes them for food an...e of the Mount Graham red squirrel's threats is an introduced species of squirrel. The Abert's tree squirrel likes to eat similar types of food to the reds and al...

Pitt professor's theory of evolution gets boost from cell research

...--whose jobs are to eliminate error that might get introduced and derail the functioning of their cell. For instance, some proteins work to keep the cell membrane intact. Other proteins act as chaperones, bringing molecules to their proper locations in the cell, and so on. In short, with that kind of protection...

New journal article urges use of animal serum-free media for growing live cells

...hout animal serum ensures that fewer variables are introduced into experiments, meaning that results are easily reproducible by different laboratories. ...

'Uniquely human' component of language found in gregarious birds

...of this passage, 100 European starlings were first introduced to New York City's Central Park in the 1890s. They flourished. North America now has an estimated 200 million starlings.) One previous study, however, suggested that even non-human primates are incapable of recognizing anything beyond the simplest...

Terahertz imaging may reduce breast cancer surgeries

...omplete tumor removal at breast cancer excision is introduced in the May issue of Radiology. Researchers used light waves in a newly explored region of the electromagnetic spectrum--the terahertz region--to examine excised breast tissue and determine if the removed tissue margins were clear of cancer, with goo...

Human albumin from tobacco plants

... plastidial system, on the other hand, the gene is introduced into the chloroplast, where photosynthesis takes place and where the genomes can multiply up to 10,000 times. A property highly valued by the experts has to be added to these positive results: the production of albumin from plants using this techni...

Invasive species harms native hardwoods by killing soil fungus

... alien, garlic mustard (Alliaria petiolata), first introduced into the U.S. in the 1860s, has since spread to Canada and 30 states in the East and Midwest, with recent sightings as far west as Oregon. While many mechanisms -- from the absence of natural predators or parasites to the disruption of long-establis...

Ernst Mayr's theory illustrated in genetic epidemiology studies

...logist Ernst Mayr's theory of genetic revolution , introduced in 1954, remains controversial to this day and has many detractors. Mayr believed that genes interacted with one another, and that this genetic interaction in turn led to an interaction of natural selection with genetic drift that could cause genet...

New possibilities to fight pests with biological means

...TPS10 is indeed the important gene, the scientists introduced TPS10 into another plant, called Arabidopsis thaliana, which then released the same scents that have been observed in corn. To test whether these scents do attract the parasitic wasps, these plants were tested in an olfactometer, a device to study in...

Ethiopian development raises birth rate

...year period during which a tapped water supply was introduced but family planning provisions were absent. They ...irth rates in villages where tapped water had been introduced and others where it had not. While previously, women had to walk up to 30 km to fetch their familie...

Rare Chinese frogs communicate by means of ultrasonic sound

...Institute for Advanced Science and Technology, was introduced to the frog species by Kraig Adler, a Cornell University biologist who had learned about it while conducting a survey of amphibians in China. Feng continues to study frogs and bats to understand how the brain processes sound patterns, especially in s...

Movement of chromosome in nucleus visualized

...was actin/myosin-dependent. When the researchers introduced a mutant form of myosin protein to the nucleus, the movement slowed. Introducing a mutant actin that does not form filaments stopped the movement, while the introduction of an actin mutant that enhances filament formation accelerated the movement. In...

1 2 3 4 5 6 7 8 9