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Tag: "forced" at biology news

TEL2 gene cooperates with MYC gene to provoke B-cell lymphomas

...were over-expressing MYC," Grosveld said. "When we forced over-expression of TEL2 in these mice, we curtaile... in the precancerous B lymphocytes that were being forced to multiply by MYC." But even the combined effect of MYC and TEL2 wasn't enough to turn these overa...

Reducing malarial transmission in Africa

...ative to CQ, is also increasing. These trends have forced many countries to change their treatment policies and use more expensive drugs, including drug combinations that will hopefully slow the development of resistance and minimize transmission of resistant parasites. In this month's premier open-access ...

Stem Cell Research Shows Potential for Replacing Tissue Damaged in Heart Attacks

... meant they had to determine how ES cells could be forced to become one single homogenous group of healthy cardiac myocytes to replace the damaged cells. To address this problem, Dr. Lough looked at the way cardiac myocytes develop in the embryo itself. In research conducted on chick embryos since 1992, hi...

Biologists discover why 10% of Europeans are safe from HIV

... this disease provided the selection pressure that forced up the frequency of the mutation from 1 in 20,000 at the time of the Black Death to values today of 1 in 10. Lethal, viral haemorrhagic fevers were recorded in the Nile valley from 1500 BC and were followed by the plagues of Mesopotamia (700-450BC),...

First North American Encapsulated Islet Transplant without Long-term Immune Suppression into a Patient with Type 1 Diabetes

... this disease provided the selection pressure that forced up the frequency of the mutation from 1 in 20,000 at the time of the Black Death to values today of 1 in 10. Lethal, viral haemorrhagic fevers were recorded in the Nile valley from 1500 BC and were followed by the plagues of Mesopotamia (700-450BC),...

Double triumph in stem cell quest

... surface and spin them until the denser nucleus is forced out. Then the team take cells from adults and fuse them with the enucleated ESCs. The idea is that the cytoplasm of an enucleated ESC will reprogram the donor nuclei, turning the fused cell into an ESC too. The result, Verlinsky told a conference on...

Researchers find new giant amphibian fossils in Africa

...erate climates of these other communities may have forced them to evolve independently and in relative isolation from the Niger fauna." The two species of amphibians discovered are similar to crocodiles in shape. Nigerpeton ricglesi had rounded noses, with small eyes and both small and large fang-like teet...

WHO suspends Marburg work, appeals for new funds

...e country. Mobile surveillance teams in Uige were forced to suspend operations yesterday when vehicles were attacked and damaged by local residents. As the situation has not improved, no surveillance teams were operational today in this province, which remains the epicentre of the outbreak. WHO staff in U...

At the molecular level, the predator is the prey

... by the rough skinned newt, Taricha granulosa, has forced several evolutionary changes in the garter snake Thamnophis sirtalis or, more specifically, in the snake nerve cell protein that endures the toxin's attacks. Embedded in the surface of garter snake nerve cells is tsNa(V)1.4, a tube-shaped protein th...

Certain fish have a special mating preference

...r was of a male with a 15 percent larger one. This forced a female to make a pre-mating sexual selection. After testing each individual and devoting over 1,000 minutes of observation, Langerhans found that it wasn't even close. "They chose the larger one over and over," Langerhans said. "All females had th...

IMF Launches World’s First DNA Database for Myeloma Patients

...r was of a male with a 15 percent larger one. This forced a female to make a pre-mating sexual selection. After testing each individual and devoting over 1,000 minutes of observation, Langerhans found that it wasn't even close. "They chose the larger one over and over," Langerhans said. "All females had th...

Wild grasses and man-made wheats advance research capabilities

...iotic and abiotic stresses," Rudd said. "I'm being forced to find broader gene pools to bring in the genetic variability I believe is necessary for the gene pool here." Karnal bunt, new races of Hessian fly, new leaf rust, stripe rust and Russian wheat aphid, as well as the need for more drought tolerance ...

Millennium Ecosystem Assessment: Many of 2 billion dryland dwellers at risk as land degrades

... threatens to swell by millions the number of poor forced to seek new homes and livelihoods. And a rising number of large, intense dust storms plaguing many areas menace the health of people even continents away, international experts warn in a new report. Thick storms rising out of the Gobi Desert affect ...

Gap-climbing fruit flies reveal components of goal-driven behaviors

...and could not fly over the gap, and they were thus forced to decide whether to attempt to cross the gap "by foot." The researchers found that the flies first visually measure the gap width and then only cross the gap if it is a traversable width. If the chasm is short, flies engage in an extraordinary cross...

Investigating 'brain shrinkage' in alcoholics

...ual is studied. Because human alcoholics cannot be forced to drink or not, researchers have no control over when in their course an alcoholic can be studied in the laboratory. By contrast, animal models of alcohol dependence can be exquisitely controlled, in terms of alcohol-exposure amounts, time in develo...

Hopkins scientists uncover 'tags' that force proteins to cell surface

...ostdoctoral fellow Sojin Shikano uncovered 65 that forced a normal protein to leave the cell's protein-building factory and go to the cell surface. By searching sequences of known human proteins, the researchers then identified those that use variations of the most potent tag they'd found, dubbed SWTY, shor...

Device traps, disables harmful bacteria

...ung condition that mimics pneumonia symptoms. This forced the pool to shut down. It is now reopened. Lars T. Angenent, Ph.D., Washington University assistant professor of chemical engineering, and the Colorado engineers mounted three high-efficiency particulate air (HEPA) ultraviolet (UV) air filters on th...

Simple explanation for complex pattern of feather development

... activator. To test the model in feathers, Harris forced expression of the activator, Shh, or the inhibitor, Bmp2, in the skin of six-day old chick embryos by injecting them with a retrovirus. The results were seen in localized patches and demonstrated that a simple relationship between developmental genes...

Plants discriminate between self and non self

...t had two roots and planted them in a chamber that forced them to grow a specified distance from each other and from roots of a neighboring plant. "We found that the roots grew significantly more and longer secondary roots on the non-self side," Falik told attendees at the 90th Annual Meeting of the Ecolog...

Prozac for future Plants on Mars

...t had two roots and planted them in a chamber that forced them to grow a specified distance from each other and from roots of a neighboring plant. "We found that the roots grew significantly more and longer secondary roots on the non-self side," Falik told attendees at the 90th Annual Meeting of the Ecolog...

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