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Tag: "again" at biology news

Duke Experiments Boost Radiation's Cancer-Killing Effects

...of time it took for human cancers to begin growing again in mice, said the radiation biologists from the Duke Comprehensive Cancer Center. Each therapy alone had limited or no benefit on the tumor, because tumors are skilled at circumventing individual therapies and finding new ways to grow. But together,...

South Africa still debating how to tackle HIV/AIDS when 5 million are infected

...lth Minister Manto Tshabalala-Msimang repeated yet again that drugs were not the only way to fight HIV/AIDS, and that eating habits were also important. After previously denying links between HIV and AIDS, the South African government began providing AIDS drugs in clinics last year. As many as five millio...

U of MN researchers reverse memory loss in mice

...form is, the platform is removed, and the mice are again put in the pool. The researchers measured how much...ame mice that swam aimlessly around the pool would again concentrate their search on the area of the pool where the platform was located, thus showing memory...

Beyond genes: Lipid helps cell wall protein fold into proper shape

...nd to either side of it. "What we've demonstrated again is that it's not just a membrane protein's genetically determined sequence that dictates how it folds so that it can function properly. Its lipid environment also plays a role," Dowhan said. "People used to assume that specific lipids made no differe...

President Bush's cut to AIDS prevention in Africa would be devastating

...data immediately after logging, 12 years later and again 28 years after the logging ended. "We know land-use change is affecting wildlife species," Gillespie said. "We know that there is a conservation issue. It's been difficult to understand what is taking place. No one had really looked at how parasites...

Affymetrix and ParAllele Launch Industry's Most Comprehensive Product Line for Targeted Genotyping

...data immediately after logging, 12 years later and again 28 years after the logging ended. "We know land-use change is affecting wildlife species," Gillespie said. "We know that there is a conservation issue. It's been difficult to understand what is taking place. No one had really looked at how parasites...

Logging changed ecological balance for monkeys, damaged health

...data immediately after logging, 12 years later and again 28 years after the logging ended. "We know land-use change is affecting wildlife species," Gillespie said. "We know that there is a conservation issue. It's been difficult to understand what is taking place. No one had really looked at how parasites...

Penguin chicks exposed to human visitors experience spike in stress hormone

...ollowed when the chicks were 40 to 50 days old and again two weeks before fledging, which occurs when the chick is about 75 days old. None of the chicks demonstrated an elevated baseline corticosterone level. But 30 minutes and 60 minutes after capture, newly hatched chicks regularly visited by humans had...

Investigating 'brain shrinkage' in alcoholics

...he said, "these have been shown to grow and spread again after periods of abstinence ?weeks to months ?and have been accompanied by improved brain function. Structural and functional changes seen in cirrhosis of the liver are also potentially reversible if treated. Furthermore, thiamine deficiency can be t...

Sleeping Sickness Epidemic Spreading in Uganda

... group, 78 percent said they would choose the drug again if they needed to, and 83 percent said they would recommend it to other women. Dr. Zhang noted that, because misoprostol causes uterine contractions, treatment with the drug could bring about abdominal pain and cramping. The researchers treated mino...

Drug Offers Alternative to Surgical Treatment After Miscarriage

... group, 78 percent said they would choose the drug again if they needed to, and 83 percent said they would recommend it to other women. Dr. Zhang noted that, because misoprostol causes uterine contractions, treatment with the drug could bring about abdominal pain and cramping. The researchers treated mino...

Purdue scientists may have found key to halting spinal cord damage

...onse to the secondary damage, the spine's function again begins to drop, and within about three days it has leveled off at a point of near non-functionality. "What our group did was measure the levels of acrolein in the injured spines of 25 guinea pigs for several days following an injury," Shi said. "We ...

IMF Launches World’s First DNA Database for Myeloma Patients

...eproductive incompatibility when populations merge again in the future, resulting in the generation of new species. "Since gonopodium size is highly variable among livebearing fish species -- ranging from less than 20 percent of the body length to more than 70% -- I am extending the results reported in th...

Certain fish have a special mating preference

...eproductive incompatibility when populations merge again in the future, resulting in the generation of new species. "Since gonopodium size is highly variable among livebearing fish species -- ranging from less than 20 percent of the body length to more than 70% -- I am extending the results reported in th...

'Bionic' arm gives amputee sense of touch

...d cited. Journals published by BioMed Central have again received impact factors that compare well with equivalent subscription titles, it was announced today, with five titles in the top five of their specialty. The high impact factors for these journals affirm that they are respected by researchers, and ...

Open Access journals get impressive impact factors

...d cited. Journals published by BioMed Central have again received impact factors that compare well with equivalent subscription titles, it was announced today, with five titles in the top five of their specialty. The high impact factors for these journals affirm that they are respected by researchers, and ...

High-powered gene profiles provide clues to genes involved in common form of lung cancer

...s have either been deleted or copied over and over again –?which suggests that a large number of cancer genes remain to be discovered. The purpose of this study was to locate the likeliest candidates." The study is part of a renewed effort by scientists worldwide to uncover the basic biology of lung cance...

NASA probe could reveal comet life, scientists claim

.... "This material is quite porous, so it is daring again to predict that subsurface ponds or lakes form transiently due to heat penetrating the exterior crust. We can thus expect biology on comets to have similarities with antarctic biology," added Professor Wickramasinghe. ...

Young Blood Revives Aging Muscles, Stanford Researchers Find

...e regenerate are less active in older animals, but again the cells responded more robustly when the livers in older mice were bathed in the younger blood. Clearly, something in the youthful blood revived the regenerative cells in muscle and liver. "We need to consider the possibility that the niche in whi...

Precise Timing Enabled Pig-to-rat Transplants To Cure Diabetes

...ly the right point in their development. "When we again harvested the transplant tissues 28 days after fertilization, it reproduced our earlier results, but if we moved the time of harvesting back to 35 days after fertilization, the rats rejected the pig tissues and continued to be diabetic," says Hammerm...

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