Cornell Researchers Precisely Date Wood From Ancient Tomb In Turkey
...ing various chronologies. One orange strip on the wall runs from circa 500 B.C. to 50 A.D.; a blue strip pasted below begins at 362 A.D. and stretches around the corner to the present. Such simple displays belie the sophisticated technologies that are used at this and other dendrochronogy labs around th...Honeybees In The Wild Nearly Gone In North America
...hing tubes of thehoneybee, puncturing the tracheal wall and sucking the bee's blood.Varroa mites, on the other hand, attach themselves to the outsideof both honeybees and their developing young to perform theirblood-sucking duties. The two mites also often carry invadingviruses. Tracheal and varroa mites ...Disease Resistance Mechanism Identified in Plants
...ers the plant cell by moving across the plant cell wall and its inner lining, the plasma membrane. Once inside the plant cell, it directly interacts with the tomato plant's Pto resistance gene. To test this, the researchers first inserted the avirulence gene into a variety of tobacco plant that h...Mechanism For Disease Resistance Identified In Plants
...ers the plant cell by moving across the plant cell wall and its inner lining, the plasma membrane. Once inside the plant cell, it directly interacts with the tomato plant's Pto resistance gene. To test this, the researchers first inserted the avirulence gene into a variety of tobacco plant that h...A Phoenix From A Ring Of Fire Is A Pattern For The Recovery Of Mount St. Helens
...sunami (or marine pressure wave) generated was a wall of water seven stories high that destroyed more than 160 towns and villages. The airwaves from the blast made four journeys around the globe, and a great belt of ash encircled the Earth. Two-thirds, or about 25 square miles, of Krakatau Island (n...Erodible plastic microspheres could be effective oral drug delivery system
...als. The microspheres moved through the intestinal wall and betweenindividual cells as early as one hour after being fed to rats. After three andsix hours, there was an intense uptake of the spheres by cells lining theintestines, liver and spleen. After the microspheres were given orally to the rats, the...Newly Identified Tomato Gene Appears Key To Fruit Softening
... cells to elongate during growth. "The plant cell wall is composed of a complex matrix of compounds,"said...ying plant cells walls has heldthat pectin was the wall component critical to fruit softening. In fact,a genetically engineered tomato was commercialized in...Bacterium gobbles up chlorinated pollutants
...terial family tree. Equipped with an unusual cell wall structure that makes it completely resistant to most common antibiotics, Strain 195 may be a unique match for some of the most irreducible compounds that modern chemistry has devised. "It's as if this bug were born to dechlorinate," Zinder said. "Th......linked mycolic acids. Thistight web makes the cell wall virtually impermeable to many drugs, making thedis...ntal in creating a model of the TBbacterium's cell wall and helped defined which parts are responsible forinteracting with normal human cells and causing th...Hurdle In Ulcer Vaccine Development Cleared
...hat causes most peptic ulcers clingsto the stomach wall by locking onto specific receptors on cells in the gastriclining. Collaborators in Sweden and the United States now have identified andisolated a bacterial protein that allows the microbe to cling. "With this attachment protein in hand, it ev..."Genetic Factors Influencing Cholesterol Response To Diet"
... greaterlikelihood of being retained in the artery wall than large LDL, and is moresusceptible to oxidation, an event that appears to be of critical importance inthe development of atherosclerosis and coronary heart disease.There is evidence that pattern B can result from alterations in one of severaldiff...UF Researchers Use Gene Therapy To Prevent Hypertension, Organ Damage
... bloodstream. The antisenseinteracts with the cell wall to reduce the potentially harmful effects ofthe angiotensin II hormone. High blood pressure and organ damage wereprevented in all of the animals in which the treatment was successfullydelivered. "There are a number of pathophysiological chang...MRI Scans Following Heart Attack Could Determine Future Health
...so increased the risk of patients' developingheart wall damage. Of the 17 patients who returned for a sec...tients who had blocked vessels had a thinner heart wall and scartissue. In comparison, none of the nine patients without blockage developedscar tissue. ...Obscure Enzyme May Play Major Role In Heart Disease
...ol and other oxidized lipids accumulate inarterial wall cells, leading to blockage of arteries and formation ofatherosclerotic lesions, he decided to study the effect of the enzyme onoxidized lipids. Researchers had previously found a very strong inverserelationship between the activity of paraoxonase in...New Vancomycin Structure May Point To Path For Overcoming Antibiotic Resistance
...inding specifically to anothermolecule in the cell wall of the bacteria," explains Patrick J. Loll, PhD, anassistant professor of pharmacology and coauthor on the new report. Theresistant bacteria have altered the relevant docking molecule so that the normalvancomycin dimer can no longer bind to it, acco...New Retinal Surgery May Reverse Legal Blindness
...low rubber ball. Then he puts sutures into theside wall of the eye to keep it pinched, shortening its length. This buckles theretina, which lines the inner wall of the eye. Then de Juan injects a saltysolution into the eye under the retina, causing the retina t...News Backgrounder: Duke Primate Center Successfully Fosters Mysterious Aye-Ayes
...proven far more destructive to their concreteblock wall enclosures. Tapping away at the hollow cinderblocks, the creaturesapparently believe they may harbor insects, and gnaw holes in the walls thatmust be covered with stainless steel sheeting. Also, since the animals areforagers, they prefer to work for ...... purified a glycoprotein from the mycelium cell wall of P. sojae that was shown to act as an elicito...nt material) has completely penetrated the cell wall and formed intracellular structures, increased motion of cell contents (cytoplasm) towards the......d by a spacecraft wall, but at higher energies the wall helps produce showers of secondary radiation, like splinters from a wall hit by a bullet. So, even more shielding is needed to absorb that, until eventually the radiation is......d that connexin32forms part of a six-sided channel wall -- called the gap junction -- thatcouples the multiple layers of the sheath to the outside, extracellular space."Our most recent work directly demonstrates the channel's function in the myelinsheath for the first time," says Scherer. The researchers ...