Tag: "giving" at biology news

Researchers create nanotubes that change colors, form 'nanocarpet' and kill bacteria

...red the nanotubes so that they became polymerized, giving them a more firm structure. Polymerized, these nanotubes could change from blue to other colors, depending on its exposure to different materials. For instance, in tests with acids and detergents, they turned red or yellow. The most critical tests, ...

New signs of life found at the Poles

...e and extreme regions of the Arctic and Antarctic giving new insights on survival of life on other planets. Reporting in this week's Nature, scientists from British Antarctic Survey (BAS) and Scripps Institution of Oceanography reveal their surprise findings that rock-dwelling micro-organisms can photos...

A novel, safer strategy for regulating gene expression

...needed that involves an intervention as simple as giving a drug. Potentially, with this technique, a gene could even be activated by natural conditions in the body for example, in a diabetic patient, a rise in glucose concentration would automatically turn on the gene responsible for insulin production....

$2.7 million grant to support creation of virtual zebrafish atlas

...yo with females producing about 200 eggs per week, giving researchers the quantity of offspring and the short life cycle needed to efficiently study how genetic malfunctions can lead to disease. As vertebrates, zebrafish provide a closer model for humans than yeast or fruit flies, which are also commonly us...

Brown ecologist garners major National Science Foundation grant

..."But with this project, we'll be working together, giving everyone an opportunity to learn and stretch across disciplinary boundaries." In their broad-scale experiment, scientists will grow about 200 European "ecotypes" of Arabidopsis for example, Swedish and Italian varieties that flower at different tim...

There and back again

...he embryo into body patterning segments, and later giving rise to the vertebrae, ribs and the muscles of the trunk. The presomitic mesoderm, from which somites form, consists of a pair of strips made up of mesenchymal cells running down the embryo's back. After the boundaries of an individual somite have be...

Researchers identify distinctive signature for metastatic prostate cancer

...scientists were able to block this regeneration by giving the animals cyclopamine or a Hedgehog-neutralizing...could prolong survival essentially indefinitely by giving them cyclopamine. And when we activated Hedgehog in the low-metastatic lines, they became highly let...

Missing genes may help explain why plague bacteria are so deadly

...is that tended to suppress its lethality, possibly giving it an evolutionary leg up on its more benign cousins. Evolutionary pressures may have also made the bacterium better adapted to colonize the flea, its preferred vector (means of transmission), and thus facilitate the flea-borne spread of the disease....

Story tips from the Department of Energy's Oak Ridge National Laboratory, September 2004

...ging, aerial photography and satellite imaging are giving researchers a better picture of highways and could pave the way to safer and more efficient roads. The focus of the project is a 50-mile stretch of Florida's Interstate 10 between Jacksonville and Tallahassee. Using remote sensing, Demin Xiong of Oak...

Tiny molecules have big potential as cancer drugs, Stanford researcher believes

...tumor growth and invasiveness. The team also tried giving a broad-spectrum cathepsin inhibitor to some cancerous mice and found that it slowed tumor development both in early and late stages of growth with no apparent side effects. The National Cancer Institute has since fast-tracked the inhibitor into stud...

OneWorld Health compiles comprehensive state of infectious diarrhea treatments, potential solutions

...cing infant mortality by about half. ORT involves giving a dilute solution of sugar and salt orally to children to replace both the water and vital nutrients (electrolytes) lost in diarrhea; it does not treat the diarrhea itself. Parents, out of frustration that ORT does not reduce stool output, purchase ...

Nevada researcher re-ignites mammal reproduction debate

...if the animal's living conditions aren't suitable, giving birth to a female would better ensure the animal's genetic success in the long term. Daughters of less healthy mothers would out-reproduce sons in poorer conditions because males that are unsuccessful in having mates have few offspring while most fem...

New compound could give some types of cancer the one-two punch

...at could eliminate a lot of complexity in terms of giving medication to patients, the body's ability to abso...at could eliminate a lot of complexity in terms of giving medication to patients, the body's ability to absorb a drug and also side effects. "We want to find ...

British scientists exclude 'maverick' colleagues, says report

... British scientists felt it was crucial to avoid giving scientific legitimacy to scientists that they described as 'mavericks' and that their distancing from the scientific community was therefore necessary. Swedish scientists thought that ousting of dissenting scientists only served to exacerbate problem...

ASU researchers demonstrate new technique that improves the power of atomic force micrscopy

...ecular level, to one of the components. We are now giving AFM chemical sensitivity in much the way colored dyes gave optical microscopes optical sensitivity for much larger objects (~1 micron)." Atomic force microscopes provide images on the nanometer scale by using a highly sensitive and tiny probe that is...

New comprehensive textbook on companion animals fills need

... and animal rights, and problems related to people giving up once-wanted pets. Eleven veterinarians contributed to the book, based on their individual expertise. For chapters on careers and operating pet businesses, contributions and editing help were solicited from numerous industry leaders, said John Cam...

U-M scientists find common virus in human prostate tissue

...plasm, preventing it from entering the nucleus and giving the signal for the cell to stop dividing and die." Imperiale's working hypothesis is that the BK virus infects epithelial cells in the prostate and transforms them into atrophic lesions through TAg expression. This produces an area of unc...

Fundamental change to Immunology 101

...ave the bone marrow to seed the thymus, eventually giving rise to T cells. The identity of this cell has long been sought and might help correct disorders of T-cell production, says Avinash Bhandoola, MD, PhD, Assistant Professor of Pathology and Laboratory Medicine, University of Pennsylvania School of Med...

Transcriptional gene silencing in nucleus shown by UCSD/VA medical researchers

...as indicated that this effect can be long lasting, giving rise to the hope that it will be similarly long lasting in humans. Until now, however, scientists have been unable to detect activity of siRNA directed against gene promoters in the nucleus of human cells. Kevin V. Morris, Ph.D., the study's firs...

Study explains spatial orientation differences between sexes

...ysiological or psychological causes. It found that giving the participants verbal instructions on how to determine their spatial orientation did not eliminate the differences between the sexes. "Since the instructions didn't remove the difference between how men and women judge spatial orientation, we belie...

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