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Catching evolution in the act
03-24-2007 · Science News OnlinePaleontologists have unearthed fossils that provide direct evidence of something scientists had long suspected: The tiny bones in the middle ears of modern-day mammals evolved from bones located at the rear of their reptilian ancestors' jaws.
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- Scientists Use Carbon Nanotube Networks To Detect Defects In Composites
10-06-2006 · ScienceDaily
University of Delaware researchers have discovered a means to detect and identify damage within advanced composite materials by using a network of tiny carbon nanotubes, which act in much the same manner as human nerves.
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- Nanoscale microscope sheds first light on gene repair
11-13-2006 · EurekAlert!
Proteins called H2AX act as "first aid" to DNA, among other roles. For the first time, scientists using the world's most powerful light microscope (the only one of its kind in the Americas) have seen how H2AX is distributed in the cell nucleus: in clusters, directing the first aid/repair after DNA injuries to the region where it is really needed.
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- Man-made proteins could be more useful than real ones
02-06-2007 · EurekAlert!
Researchers have constructed a protein out of amino acids not found in natural proteins, forming a complex, stable structure closely resembling a natural protein. Their findings could help scientists design drugs that look and act like real proteins but won't be degraded by enzymes or targeted by the immune system, as natural proteins are.
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- Balancing Act: Excess steroids during pregnancy may pose risks for offspring
03-24-2007 · Science News Online
Heavy amounts of steroids taken during pregnancy can have long-term deleterious effects on offspring, a study of monkeys shows.
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- Long-term ulcerative colitis study shows Remicade responders maintained improvement
05-23-2007 · EurekAlert!
Findings presented today at Digestive Disease Week 2007, from long-term extensions of the ACT trials show that subjects with moderately to severely active ulcerative colitis who had responded to REMICADE in the blinded phase of the trials maintained improvement in their clinical symptoms for up to two years.
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- Support for Children's Health and Medicare Protection Act given to House leaders by ACP
07-25-2007 · EurekAlert!
In a letter to leaders of the US House of Representatives Ways and Means, and Energy and Commerce committees, the president of the American College of Physicians today expressed support for the Children's Health and Medicare Preotection Act of 2007 (H.R. 3162). Representing 124,000 internal medicine physicians and medical student members, ACP is the largest medical specialty society in the United States.
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- Biologists expose hidden costs of firefly flashes
09-19-2007 · EurekAlert!
Tufts University biologists have discovered a dark side behind the light shows put on by fireflies each summer. While it's energetically cheap for fireflies to produce their distinctive flash signals, flashier males are more likely to end up on the dinner table. The importance of these two conflicting forces could shift in different firefly populations. It is possible that this evolutionary balancing act might generate entirely new firefly species with their own distinctive flash codes.
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- Study proposes new theory of how viruses may contribute to cancer
10-23-2007 · EurekAlert!
A study published in the Oct. 24 issue of PLoS ONE suggests that viruses may contribute to cancer by causing excessive death to normal cells while promoting the growth of surviving cells with cancerous traits. The University of Pittsburgh Cancer Institute researchers suggest that viruses may act as forces of natural selection by wiping out normal cells that support the replication of viruses, leaving behind those cells that have acquired defects in their circuitry.
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- Sculpted 3-D particles could aid diagnostics
12-04-2007 · Massachusetts Institute of Technology (MIT)
MIT engineers have used ultraviolet light to sculpt 3-D microparticles that could be used in medical diagnostics and tissue engineering. The particles might be designed to act as probes to detect certain molecules or to release drugs or nutrients.
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- How DDT metabolite disrupts breast cancer cells
02-13-2008 · EurekAlert!
Research has shown that the main metabolite of the insecticide DDT could be associated with aggressive breast cancer tumors, but there has been no explanation for this observation to date. Now a report published in the open access journal Breast Cancer Research shows how DDT could act to disrupt hormone-sensitive breast cancer cells.
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