researchers 2 7

Tag: "researchers" at biology news

Study shows nanoshells ideal as chemical nanosensors

...oduce for practical sensingapplications. Now, Rice researchers have shown that nanoshells canprovide large, clean, reproducible enhancements of this effect, openingthe door for new, all-optical sensing applications."Not only did we find that nanoshells are extremely effective atmagnifying the Raman signature of ...

Gene Vaccine Protects Mice Against Development Of Her2/neu Breast Cancer

...ffer a way to treat some human breast cancers, say researchers atThe University of Texas M. D. Anderson Cancer Ce... to express thetarget protein. For this study, the researchers inserted the gene forthe HER2/neu protein in place of the deleted viral genes and thenpackaged the v...

Highly adaptable genome in gut bacterium key to intestinal health

...t's highly complex microbial society, according to researchers at Washington University School of Medicine in St....tional stability of the intestinal bioreactor, the researchers say. In addition, variations in the composition of gut microbial communities among different people ...

Amino acids in nectar enhance butterfly fecundity: A long awaited link

... of which nectar is best known. Thirty years ago, researchers discovered that nectars of flowers pollinated by b...ther butterflies actually need nectar amino acids, researchers from the University of Basel raised map butterfly caterpillars on both nitrogen poor and nitrogen ri...

Scientists identify genetic pathways essential to RNA interference

... and the control of cell division in cancer." The researchers note that better understanding the mechanisms underlying RNAi could help transform what has been a research tool into a powerful therapeutic tool. Although the process has worked well in studies of cultured human cells, it has not yet been effective ...

A comprehensive response to HIV could prevent 10 million AIDS deaths in Africa by 2020

...ffer a way to treat some human breast cancers, say researchers atThe University of Texas M. D. Anderson Cancer Ce... to express thetarget protein. For this study, the researchers inserted the gene forthe HER2/neu protein in place of the deleted viral genes and thenpackaged the v...

Ants Genetic Engineering Leads To Species Interdependency

...emselves to the hybrid workforce strategy.When the researchers prevented queens from mating with males of theother species, very few succeeded in making any workers at all, ahandicap that would lead to certain population failure in the field.The new findings suggest that specialization involving reliance oninter...

Same mutation aided evolution in many fish species, Stanford study finds

...es of laboratory work studying how animals evolve, researchers sometimes need to put on the hip waders, pull out ...estion, called Eda, is an old friend to laboratory researchers who have found that mutations in the same gene in mice cause altered hair patterns. However, in mice...

Papers of DNA Pioneer and Nobel Laureate Francis Crick Added to National Library of Medicine’s Profiles in Science Web Site

...rick collection brings to 14 the number of notable researchers and public health officials whose personal and professional records are featured on Profiles. The site is located at www.profiles.nlm.nih.gov. The name of Francis Crick (1916?004) is inextricably linked to the discovery of the double helix of deoxyr...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...ing to get around on those islands," he said. The researchers found that the density of breeding seabirds on fox-free islands was two orders of magnitude higher than on fox-infested islands. The resulting difference in nutrient inputs was reflected in soil phosphorus levels that were more than three times highe...

Gene Therapy For Parkinson's Disease Moves Forward In Animals

...#62; Meanwhile, in separate experiments with rats, researchers used gene therapy to completely reverse abnormal movements called dyskinesias in some of the animals, suggesting a new way to combat the flailing movements produced by a widely used drug treatment for Parkinson's disease. Levodopa, considered the gol...

Scientists reveal molecular secrets of the malaria parasite

...rvention. "We hope this project will help vaccine researchers find the besttargets against malaria," says scientist Neil Hall, the first author ofthe paper that appears in the January 7th issue of Science. "Thestudy's findings will help scientists identify parasite genes that areinteracting with the host as wel...

Studies reveal methods viruses use to sidestep immune system

A series of studies by researchers at UT Southwestern Medical Center sheds light on t...gy and currently available online, UT Southwestern researchers describe how an essential gene, called RIG-I, turns on a cascade of host immune defenses when the he...

Development of portable infectious disease detector

...r ofbiomedical engineering and physics, Vanderbilt researchers have furtherminiaturized this sensor technology to record rapid changes in themetabolism and signaling of individual cells. To handle such smallnumbers of cells, they have adapted a method for molding micro-channelsand valves into a material similar ...

Researchers add new tool to tumor-treatment arsenal

...ll death, but without the toxic side effects. The researchers studied the results of combining a DNA-damaging agent called cisplatin with RAD001, a derivative of the immunosuppressive drug rapamycin. Used in organ transplant patients, rapamycin and its derivatives have shown promising anti-tumor activity in pha...

Why do insects stop 'breathing'? To avoid damage from too much oxygen, say researchers

...minutes at a time. Challenging previous theories, researchers at UC Irvine and Humboldt University propose that ...ed to openings in their sides. In their study, the researchers inserted fine tubes into the spiracles of a moth to measure not only how much carbon dioxide the mot...

Alcohol's effects on gene expression in the central nervous system

...his is called gene expression." McBride said that researchers now know that alcohol can change gene expression i...cs." McBride added that, despite recent advances, researchers need further developments in microarray technologies and bioinformatic approaches to better understa...

Deficiency of growth hormone and IGF-1 reduces cancer and kidney disease, but creates other problems

...t Medical Center and four other institutions. The researchers used a rat model to explore the effects of growth ...ancer and other diseases that limit lifespan. The researchers developed a strain of dwarf rats that were naturally deficient in both growth hormone and in IGF-1. ...

New SARS Protein Linked To Important Cell Doorway

...in connection with Chinese New Year on February 9, researchers at Washington University in St. Louis have publish... available for direct study, Washington University researchers used the SARS genome, finished a mere half-year after the first human infections, to look for potent...

Jumping gene helps explain immune system's abilities

...right. Writingin the Dec. 23 issue of Nature, the researchers show that a jumpinggene called Hermes, still activ...hould help reveal some secrets of thisprocess, the researchers say."The immune system takes an approach to protein building similar tothat of diners creating a mea...

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