Tag: "went" at biology news

Insecticide resistance: A constraint on evolutionary change

...- a far less likely event. The researchers went on to sequence the 119 position in 26 natural populations of Ae. aegypti in 12 countries and found that in all cases the three-letter codon at this position was the same, fitting with the lack of AchE1-based resistance in this species observed worl...

The blind really do hear better

...id not take into account the age at which subjects went blind. In the present study, researchers at McGill and at Universit de Montral tested people from 3 categories: those who were fully sighted, "early blind" (blind at birth or lost their sight during the first two years of life), and "late blind" (tho...

Songbirds escaped from Australasia, conquered rest of world

...ds) and New Guinea--about 45 million years ago and went on to populate every other continent save Antarctica. The study, led by Keith Barker of the University of Minnesota's Bell Museum of Natural History, will be published online this week in the journal Proceedings of the National Academy of Sciences ....

New textbook introduces students to the foundations, applications of nanotechnology

...tudents at Virginia Tech in spring 2001. When Evoy went to the University of Pennsylvania that summer, he introduced the course there. Kluwer saw the course on the Virginia Tech website and approached Heflin in September 2001 about writing a textbook. "When I said, 'No way do I have the time to write a co...

90 million year old dino tracks found on resort island

...ir footprints. Originally, Caldwell and Radovcic went to the island of Hvar to search forfossils of marine lizards and snakes. Fossils of these animals were firstfound more than hundred years ago on the island of Hvar and were studiedby D. Gorjanovi-Kramberger of the Croatian National Museum and Kornhub...

Funding to commercialize technologies of UC San Diego engineers tops $1.2 million

...on each project, see below.) All of the applicants went through a rigorous screening mechanism, and their ... for their projects." Of the six new grants, three went to faculty in the Electrical and Computer Engineering department, two went to researchers in Mechani...

Secret behind hard exoskeletons, spreading wings revealed

...process. In the first phase of the work, the team went to work to determine the genetic sequence of bursicon. Using cockroaches, Honegger's students were able to collect and purify a small sample of the hormone. They sent this sample to a laboratory at Harvard University that chemically sequenced it and ...

LSU researcher discovers new bird

...mpt to attract his quarry failed and he once again went home empty-handed. Then, last month, Lane and some cohorts were in Peru conducting other field work when they made spur-of-the-moment plans to give it one more try. After obtaining permission from the proper authorities, Lane and his grou...

XsalF comes to the fore in brain regionalization

...on of more posterior markers. Onai et al. next went on to test the effects of the loss of XsalF function. Disabling the gene by the deletion of functional domains resulted in embryos with significant reductions in anterior neural structures. Conditional loss-of-function experiments showed that the gen...

Researchers discover how worms' noses sense oxygen

...cyclase is put together, Marletta and his students went in search of similar enzymes in the genomes of other organisms. Patricia Pellicena, a UC Berkeley postdoctoral fellow with collaborator John Kuriyan, a UC Berkeley professor of chemistry, found homologues not only in the nematode, but also in more pr...

'Weed from hell' found in Texas

...erbicide (for effective control.)" The testing went well, Baumann said. "Preliminary results two weeks after treatment indicated several products showed promise," Baumann said. These treatments included: 1 pint/ acre of Tordon 22K gave 60 percent to 70 percent control. 3 pints/acre of Surmou...

Study finds plant enzyme function changes with location in cell

...ed this address signal, the plant enzyme no longer went into the chloroplast, but instead entered the endoplasmic reticulum, a membranous structure within the cell. In that location, the enzyme desaturated fatty acids the same way it did in yeast. Conversely, when the scientists added the chloroplast addr...

A fly's taste experience is much like our own

...e middle of that region, and neurons from the legs went to the back of the ganglion. Similarly, bitter notes played out in one area of the brain, while sweet notes lit up a separate area. As Scott continues her genetic studies of the remainder of the 68 gustatory neurons, she and her lab colleagues also a...

Japanese researchers develop novel method of introducing transgenes into animals

...ovirus was taken up by the sperm stem cells, which went on to produce sperm with the transgene. According to Dr. Shinohara and his colleagues Mito Kanatsu-Shinohara and Shinya Toyokuni, 86 percent of the males injected with the retrovirus became fertile. Eight of 31 of these males (26 percent) later mate...

Improved nutrition could prevent more than half of the world's child deaths annually

...e due to undernutrition. However, the new analysis went further. It examined whether the risk of dying due to being underweight varies by cause of death. Using data from 10 large cohort studies from sub-Saharan Africa and Southeast Asia with information on weight-for-age z score and survival or death by c...

Conflicting views on embryonic and adult stem cells complicate research in stem cell therapeutics

... for animal and human stem cells, only $10 million went to research involving human ESCs. The ESCs are also expensive at $5,000 per vial, forcing NIH to subsidize cell culturing or offer supplements to its grants in order to cover the extra cost. Quality control is another critical issue in stem cell ther...

Medical implants work better when you rough them up, study finds

...d to be effective," von Recum said. "The interface went beyond a layer of connective tissue cells these old implants essentially became embedded in the body as connective tissue and bone grew into them. Their removal was nearly impossible, as it usually resulted in major bone loss in some types of implan...

Existing drug may prevent brain injury and seizures in newborns

...rmalities than the untreated rats. The researchers went on to show that topiramate does not affect the normal development of oligodendrocytes. "The finding that treatment with a drug prevents injury when given after the insult is tremendously significant," says Jensen, of the Department of Neurology...

Damaged genes in aging human brain provide clues to cognitive decline

...ated to gene damage. The researchers then went on to show that many of the genes with altered expression in the brain were badly damaged and could not function properly. They showed that these genes also could be selectively damaged in brain cells grown in the laboratory, thereby mimicking some o...

LARGE protein can overcome defects in some types of muscular dystrophy

...ble to damage. "In most cases, if a normal person went out and ran 20 miles, the muscle is going to be damaged. But the muscle is actually able to repair itself," said Campbell. "However, patients with muscular dystrophy undergo this process much more quickly, and they eventually lose the ability to repa...

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