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Molecular biology fills gaps in knowledge of bat evolution

...capable of powered flight. The fossil record alone left bat evolutionary history about 61 percent incomplete, according to Springer. Bats play a major ecological role as plant pollinators and insect predators. For Springer, this latest research is significant because it shows that molecular information c...

Growth in the sea comes down to a struggle for iron

... scientist on the Kilo Moana, a research ship that left Hawaii, bound for the sub-Arctic waters of the western Pacific. Owned by the Office of Naval Research and operated by the University of Hawaii, the ship was loaded with equipment and supplies, ready for an extended stay at sea. Its subsurface pontoon...

Needling Chromosomes Reveals Cell Division Secret

...entral process inchromosome duplication."So, we’re left with the mystery of what molecules hold the chromatidstogether at this point in cell division,?Nicklas said. "But that’s theusual outcome of work in my laboratory and a sign that we're doing goodscience since we raise new questions. We lay the mechan...

Protein Packages Found To Activate Genes; May Be What Regulates Development And Disease

... to detect gene activity. But the scanning results left them with a huge amount of data, and the daunting task of deciphering what it means in terms of how genes function. For that part of the project, they teamed with investigators from the Broad (pronounced to rhyme with "road") Institute. "The human g...

Ants Genetic Engineering Leads To Species Interdependency

...olving reliance oninterspecific hybrid workers has left these species unable to surviveindependently of one another.Sara Helms Cahan, Glennis E. Julian, Steven W. Rissing, TanjaSchwander, Joel D. Parker, and Laurent Keller: "Loss of PhenotypicPlasticity Generates Genotype-Caste Association in Harvester An...

Gene Therapy For Parkinson's Disease Moves Forward In Animals

...he treatment, all animals had limited use in their left paws. After treatment, the animals receiving the therapeutic enzyme mixture show complete recovery in their paws. Researchers say not only did the rats recover substantial degrees of function in their impaired forelimbs, continuous levels of L-dopa w...

DNA Recombination and Repair—A New Twist to RecA Function

...P in synchrony with the sixth RecA molecule to its left and the sixth RecA molecule to its right. The authors note that there are approximately six RecA molecules per helical turn in a RecA filament. They propose that the RecA molecules hydrolyzing ATP at any given moment are aligned in a “stripe?that ru...

NC State scientist finds soft tissue in T. rex bones

...rom the T. rex femur fragment. The removal process left behind stretchy bone matrix material that, when examined microscopically, seemed to show blood vessels, osteocytes, or bone building cells, and other recognizable organic features. Since current data indicates that living birds are more closely rela...

First real-time view of developing neurons reveals surprises, say Stanford researchers

...h's favorite planktonic food moving up and down or left and right. They expected to find that young neuro...o images moving in a certain direction or near the left or right side of the visual field. What they found was a surprise. As soon as the neurons were old ...

Boosting HIV screening can increase survival and is cost effective

...urn on investment. "HIV is a severe disease that, left untreated, produces substantial morbidity and mortality," said Paltiel. "It has a long asymptomatic phase, which can be diagnosed using very effective, inexpensive tests. Most importantly, early detection speeds linkage to proven, life-prolonging car...

UCSD team discovers specialized, rare heart stem cells in newborns

...n said. "We believe the isl1+ progenitor cells are left over from fetal development so that they can insure the closure of any existing small heart defects and the formation of a completely mature heart in newborns." The UCSD team noted in the Nature paper that the next research steps with the isl1+ cell...

Gene therapy for Parkinson's disease moves forward in animals

...he treatment, all animals had limited use in their left paws. After treatment, the animals receiving the therapeutic enzyme mixture show complete recovery in their paws. Researchers say not only did the rats recover substantial degrees of function in their impaired forelimbs, continuous levels of L-dopa w...

Vampire bats keep out of trouble by running

...e ground; other bat species fumble helplessly when left to walk. But researchers in Cornell's College of Veterinary Medicine have discovered that these bats not only walk but run. The unprecedented gait of Desmodus rotundus is described in a brief communication in this week's issue of Nature magazine (Mar...

Camera Traps Catch Eye of the Tiger

...gers are critically endangered, with as few as 400 left in the wild," said Dr. Sybille Klenzendorf, lead scientist for WWF's tiger program. "We're racing to find out as much about them and where they live as we can, before more of their natural habitat is converted to commercial plantations growing pulp w...

Pulsating ultrasound enhances gene therapy for tumors

...mors treated with pulsed-HIFU compared with tumors left unexposed. Researchers were especially encouraged by the results because the type of cancer treated in the study--squamous cell carcinoma, found in head and neck tumors--is one of the least permeable cancers and does not respond well to chemotherapy...

Controlling protein diversity

...licing in which certain information from a gene is left out or included, changing the format of the result...ents had been included or different parts had been left out. In this instance, leaving out part of the gene changes the protein. "The question is, 'How is ...

Low level of extinction during ice age linked to adaptability

...of these particular brachiopods during the ice age left the oceans populated almost entirely with those who lived over a wider geographic area," Powell said. "What I found is that the uniquely low global rates of evolution and extinction for brachiopods during the late Paleozoic ice age were caused by the...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

...: romance is on the right, 'attractiveness' to the left Another important discovery, Brown said, was that "to our surprise, the activation regions associated with intense romantic love were mostly on the right side of the brain, while the activation regions associated with facial attractiveness were most...

Emergence of cancer as major cause of childhood death in developing countries is not being adequately addressed

...rby clinical research professor. This decision has left many children with cancer in much of the developing regions of Asia, South and Central America, Africa and the Middle East without access to effective medical treatment, he added. Pui is a co-author of an editorial on the geographical inequality of p...

Same-Sex Mating Discovered in a Toxic Fungus

...f cells into identical clones, Heitman said. That left scientists with a conundrum. C. neoformans has a defined sexual cycle involving both mating types. "Yet, how can sexual reproductive potential be maintained in an organism with a largely unisexual population structure?" Heitman asked. "The fruiting o...

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