Posts Tagged ‘DNA’
Earth & Environment - Oct 9, 2009 17:28 - 0 Comments
Twig by twig, climbing Earth’s ‘Tree of Life’
VANDERBILT (US)—Antonis Rokas is a member of a small cadre of scientists applying the growing power of genomics to untangle and correctly arrange the branches of the Tree of Life. (more…)
Science & Technology - Oct 2, 2009 16:11 - 0 Comments
Bitemark evidence less reliable than DNA
U. BUFFALO (US)—A new study challenges the commonly held belief that every bitemark can be perpetrator identified, and concludes that bitemarks should be very carefully evaluated in criminal investigations where perpetrator identity is the focus of a case. (more…)
Health & Medicine - Sep 28, 2009 10:36 - 3 Comments
Wonder drug may treat cancer, addiction
UC IRVINE (US)—A drug in development to treat cancer could have the added benefit of helping prevent relapse in people trying to overcome cocaine addiction. (more…)
Science & Technology - Sep 15, 2009 19:15 - 3 Comments
‘Jumping genes’ use bacteria to go viral
Tn7, which is regularly found in bacterial strains resistant to antibiotics, was originally isolated from E. Coli bacteria, pictured here. (Credit: Jake Jacobs)
Science & Technology - Sep 11, 2009 17:00 - 1 Comment
DNA crystals—now showing in 3D
Three-dimensional DNA structures were created by using single-stranded “sticky ends” that link double helices in DNA triangles that point in different directions.
Science & Technology - Sep 10, 2009 12:37 - 0 Comments
Software speeds hunt for cancer triggers
Rachel Karchin, right, an assistant professor of biomedical engineering, and doctoral student Hannah Carter led a Johns Hopkins team that developed software to narrow the search for mutations linked to cancer. (Credit: Will Kirk/Johns Hopkins)
Health & Medicine - Aug 27, 2009 11:10 - 0 Comments
Signs of prenatal smoking in DNA
“Maternal smoking during pregnancy is not only detrimental to the health of the mom and the newborn child, but research such as this suggests that it may impact the child into adulthood and possibly even future generations as well,” says Linda Birnbaum, director of the National Institute of Environmental Health Sciences.
Earth & Environment - Aug 26, 2009 11:28 - 1 Comment
Timid teen sharks stay close to home
From 1995 to 2007, more than 1,700 immature lemon sharks were caught, tagged, and released. The implanted tags, plus subsequent recaptures and DNA analysis, showed that more than half of the 3- to 7-year-old sharks caught off Bimini were born locally and had lingered near their birthplace for years.
Science & Technology - Aug 20, 2009 4:00 - 0 Comments
Quantum dots catch cancer early
In this illustration, quantum dots are depicted as gold spheres that attract DNA strands linked to cancer risks. When the quantum dots are exposed to certain types of light, they transfer the energy to fluorescent molecules, shown as pink globes, that emit a glow. This enables researchers to detect and count the DNA strands linked to cancer. (Credit: Yi Zhang/ Johns Hopkins University)
Science & Technology - Aug 19, 2009 15:23 - 0 Comments
See the writing on the cells
University of Michigan researchers demonstrate their technique for sketching experiments on a canvas of live cells by writing “UMICH” with a fluorescent water-based solution on cells growing in another water-based medium. (Courtesy: Hossein Tavana)
Science & Technology - Aug 17, 2009 4:00 - 0 Comments
Entire genome on the cheap
The lower cost of sequencing the human genome could help researchers understand how genes and mutations result in the traits that make individuals unique.
Health & Medicine - Jul 17, 2009 10:36 - 0 Comments
Rein in rogue RNA to treat muscular dystrophy
Deposits of toxic RNA (red) are seen here inside muscle cell nuclei (blue) from an individual with myotonic dystrophy.
Health & Medicine - Jul 7, 2009 12:22 - 0 Comments
Mouse model opens window into Parkinson’s
Neuroscientist Chenjian Li says a new animal model of Parkinson’s will make it possible for scientists to study the disease in real time, “allowing us to track its progression at a cellular and molecular level. What we learn will then feed back into the drug development process.”
Health & Medicine - Jul 6, 2009 12:28 - 2 Comments
Infertility risk rises for men on depression meds
“It’s fairly well known that SSRI antidepressants negatively impact erectile function and ejaculation,” says Peter Schlegel, the study’s senior author. “This study goes one step further, demonstrating that they can cause a major increase in genetic damage to sperm.”
Science & Technology - Jul 2, 2009 10:34 - 1 Comment
For ants, farming is in their DNA
Emory University biologist Nicole Gerardo gives a tour of the complex world of fungus-growing ants.
Science & Technology - Jun 18, 2009 9:28 - 0 Comments
Nanoscale DNA slices reveal cell division force
Micrograph showing condensed chromosomes in blue and the mitotic spindle in green during cell division. (Courtesy: Oak Ridge National Laboratory, Image Science and Machine Vision Unit)
Earth & Environment - Jun 18, 2009 8:35 - 0 Comments
Plant biologist weeds through ‘junk’ DNA
McGill University biologist Thomas Bureau is studying a common plant known as rock cress to learn more about so-called junk DNA. (Credit: Claudio Calligaris)
Science & Technology - Jun 15, 2009 16:23 - 0 Comments
Site corrals data to predict gene behavior
A team led by Olga Troyanskaya (right), an assistant professor at Princeton, has developed a Web site that brings together genetic data from various sources to help scientists better understand ailments such as Alzheimer’s disease, diabetes, and cancer. Curtis Huttenhower (left), a postdoctoral researcher in Troyanskaya’s lab, developed the site.
