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Tag: "created" at biology news

A rarity among arachnids, whip spiders have a sociable family life

...ite in the cages, Rayor and Lisa Taylor, CALS '01, created cages with uniform plywood surfaces and found that the siblings grouped together but changed their location daily, suggesting individuals preferred proximity to each other over a specific location. When siblings were removed from a familiar cage and ...

Scientists discover new, readily available source of stem cells

... functional tests included implanting neural cells created from AFS cells into mice with a degenerative brain disease. The cells grew and "re-populated" the diseased areas. In addition, bone cells produced from the stem cells were successfully used to grow bony tissue in mice, and liver cells were able to se...

Molecular differences between early and advanced melanomas could provide new drug targets

...ction of reactive oxygen (ROS). Reactive oxygen is created during cellular metabolism and has long been associated with triggering angiogenesis and the resulting growth of tumors. The scientists also found that the Akt-induced melanoma cells produced more of the enzyme NOX4, one of the NOX family of genes kn...

Angelman syndrome deficits rescued in mice

...smus Medical Center in Rotterdam, Netherlands ?had created a mouse with a mutation that prevented this inhibition of CaMKII. The researchers decided to breed the Angelman mice with the CaMKII mutant mice to see if counteracting the CaMKII inhibition would alleviate the neurological problems. The resear...

Rapid, Low-Cost DNA Testing

... in 2004 and 2006. In May 2005, Professor Rothberg created a company called Diffinity Genomics, Inc. with two partners to further study and commercialize his technique. Professor Rothberg's method is part of a much larger process that analyzes DNA. First, a technician extracts the DNA from the blood, tiss...

Are we killing the world's oceans?

...vent is part of a series of Forums on Taboo Topics created by RSC: The Academies (formerly the Royal Society of Canada), in partnership with individual Canadian universities, where thorny issues of national concern can be critically examined and policy approaches explored. Experts from Canada, Chile, Germ...

Early-stage sperm cells created from human bone marrow

...mice, published in Laboratory Investigations, also created spermatagonial cells from mouse bone marrow. The ...nal Developmental Cell that he and colleagues had created sperm cells from mouse embryonic stem cells and used these to fertilise mice eggs, resulting in seve...

New study sheds light on 'dark states' in DNA

... techniques used to study other high-energy states created in DNA by UV light. The study suggests that DNA ...are much longer lived than previously known states created by UV light, may be linked to DNA damage. The existence of this dark energy state -- dubbed np* (p...

Turning green gunk to gold, anti-cancer gold

...ycin analogs with low levels of side effects to be created for clinical trials. "This issue represented an exciting target that offered not only an interesting scientific problem, but the potential to do something of practical importance in creating a promising anti-cancer drug," he said. ...

Novel antigen-cloning technique may boost efforts to develop a melanoma vaccine

...in four out of nine melanoma patients. The antigen created no response in cells taken from healthy donors. The study also showed that RPL8 might contain multiple regions that are capable of eliciting an immune response, suggesting that RPL8 may be an ideal vaccine target for patients that display this ant...

Surgeons develop simpler way to cure atrial fibrillation

...ten precisely placed incisions in the heart muscle created a "maze" to redirect errant electrical impulses. "This technology has made the Cox-maze procedure much easier and quicker to perform," says Ralph Damiano Jr., M.D., the John Shoenberg Professor of Surgery and chief of cardiac surgery at the School...

Scientists unveil piece of HIV protein that may be key to AIDS vaccine development

... gp120. To overcome the problem, the investigators created a variety of gp120s and eventually made the protein stiff enough to capture a picture of it in complex with b12. They saw that b12 binds gp120 at the same point where gp120 initially attaches to CD4. Unlike the gp120-CD4 interactions, however, b12 ca...

Researchers urge monitoring of bone health during chemotherapy

... bone turnover. The resulting loss of bone density created a favorable environment for bone tumor growth. When the researchers injected melanoma or breast cancer cells into mice, those getting G-CSF developed a two-fold increase in tumor burden, a measure of the size and severity of tumors, compared to th...

Researchers create artificial enzyme that mimics the body's internal engine

...ed by Stanford research associate Richard Decreau, created an artificial version of the enzyme active site using organic compounds as building materials. The imitation site, which involves an elaborate sequence of 32 chemical steps, was built from scratch and took several years to develop. The site contai...

Global 'sunscreen' has likely thinned, report NASA scientists

...lobal estimates funded by NASA. Scientists at GISS created the Global Aerosol Climatology Project by extracting a clear aerosol signal from satellite measurements originally designed to observe clouds and weather systems that date back to 1978. The resulting data show large, short-lived spikes in global aero...

Scientists to track impact of Asian dust and pollution on clouds, weather, climate change

...living mammal, the researchers said. The mice were created by Ehlers' colleague Guoping Feng, Ph.D., assistant professor of neurobiology. The researchers decided to test the mice first on the sense of smell, since the olfactory system not only involves complex neural circuits but also has a behavioral com...

Common algae helps illustrate mammalian brain electrical circuitry

...living mammal, the researchers said. The mice were created by Ehlers' colleague Guoping Feng, Ph.D., assistant professor of neurobiology. The researchers decided to test the mice first on the sense of smell, since the olfactory system not only involves complex neural circuits but also has a behavioral com...

Penn researchers replace organ in adult mice using 'single-parent' stem cells

...ne have derived uniparental embryonic stem cells - created from a single donor's eggs or two sperm - and, for...e effects of genomic imprinting, McLaughlin's team created an experiment in which they would attempt to reconstitute the hematopoietic, or blood-producing, ste...

Re-analysis of cigarettes confirms tobacco companies increased addictive nicotine 11 percent

...nued surveillance of nicotine delivery in products created by an unregulated industry." In an opinion in US vs. Philip Morris USA et. al. Judge Gladys Kessler wrote that tobacco companies "can and do control the level of nicotine delivered in order to create and sustain addiction" and further, that the "g...

Resistance to anti-HIV drugs in Uganda developed due to drug supply problems

...ues. A two-week nationwide shortage resulted that created gaps in treatment for some individuals taking that...to Fight AIDS, Tuberculosis and Malaria, which was created to dramatically increase resources to fight three of the world's most devastating diseases, and to d...

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