Is the zebra fish leading us to new therapies?
...ork. It is known that, during their growth, nerves orient themselves very specifically toward a target organ or tissue. Then, by means of attraction and repulsion signals, so-called signal molecules guide the nerve cells to their target. In their search for the mechanisms behind the targeted growth of blood...Head movements by warblers could reveal basis for birds' geomagnetic sense
...nse geomagnetic fields and use this information to orient their flight. The new findings document a specific "head-scanning" behavior, previously unappreciated, that is performed by the birds just prior to orienting their bodies toward their migratory direction. Night-migratory songbirds are known t...New health policy challenges extend beyond borders
...t new criteria is the Bush administration using to orient international aid in health? Among the distinguished Forum speakers are: Jack Croddy, Acting Deputy Assistant Secretary for Health, Space, and Science,U.S. Department of State Laurie Garrett, Council on Foreign Relations Join health policy a...Falling canopy ants glide home
...the ants' initial vertical drop, a quick swivel to orient the hind legs in the direction of the "trunk" and ...tomology Laboratory, showed that the ants visually orient toward tree trunks. In addition, small workers don't fall as far as their larger counterparts befor...Ophthalmologists and physicists team up to design 'bionic eye'
...nding to a visual acuity of 20/80--sharp enough to orient yourself toward objects, recognize faces, read lar...er snipped off to create asymmetry so surgeons can orient it properly during implantation. One design includes an orchard of pillars: One side of each pillar ...New findings in taste and smell research
...erm behavior revealed that sperm use klinotaxis to orient and swim towards the egg. By integrating the changing concentration over a 200ms interval, sperm can navigate to a shallow gradient within a temporally and spatially dynamic fluid environment. Moreover, the concentration gradient, not concentration i...Researchers determine temperature-driven rootworm forecast
...ificant enough, we institute management. It letsus orient in time to make management decisions," he said. "When weincorporate this to overall management, we will limit pesticide usage towhen it is needed."...Chickens orient using a magnetic compass
...e of year. The work also shows that the ability to orient with magnetic cues is not only present in an ancient avian lineage dating back to the cretaceous period, but has also been retained in a nonmigrating bird after thousands of years of domestication....Overbearing colored light may reveal a second mechanism by which birds interpret magnetic signals
...ence of light on the ability of migratory birds to orient to magnetic signals, researchers have found clues ... levels found 20 min after sunset, the birds still orient by the magnetic field, but they no longer show the seasonal change between spring and autumn and ins...Researchers learn how blood vessel cells cope with their pressure-packed job
...hing. Without Rho, the cells lost their ability to orient stress fibers properly. "Rho is a very important molecule," said Chien. "It works in response to, and in concert with, physical stretching to generate the healthy alignment of stress fibers." Indeed, when Chien's group used a genetic technique to inc...Bacteria which sense the Earth's magnetic field
...ensor function was disrupted; the cells could only orient themselves weakly in the magnetic field. Inspectio... for our understanding of the way higher organisms orient themselves to the magnetic field. We have known for some years that certain animals -- like migrator...The unfolding of amyloid's true colors
...importantly, the M{alpha} amyloid fibrils bind and orient the highly reactive organic melanin precursors, mitigating the cellular toxicity observed when M{alpha} amyloid production is halted by mutation. The authors also raise the intriguing idea that, given the propensity for many proteins to form amyloid...'Computer-chemistry' yields new insight into a puzzle of cell division
...lecules' component parts, or "residues," must also orient in a tongue-and-groove fit at a few other special places, which the researchers dubbed 'hot spots," on the irregular molecular surfaces. Only when active sites and hot spots fit correctly can this brief docking accomplish its role in the cell divisio...Scientists link another gene to degenerative blindness
...llular chaperone, ensuring that proteins "fold" or orient properly and get to the parts of the cell they need to go. It also modulates calcium levels, which is critical for proper vision. When calnexin goes awry, however, calcium levels build up and the proteins that depend on it malfunction, says senior ...Engineered heart tissue offers insights into irregular heartbeats, defibrillator failure
...rt tissue growth. The proteins caused the cells to orient themselves, interconnect and grow in a manner that mimics normal heart tissue, Bursac explained. The team then induced electrical activity in these engineered tissues as would occur in ventricular tachycardia and attempted to halt it with pace-settin...... "There's something about speech that infants will orient towards, but we don't yet know what it is. What are the aspects of the speech stimulus have we taken away in making our non-speech sounds?"...USC, Rice to develop bacteria-powered fuel cells
...searchers found that Shewanella would lay flat and orient themselves relative to minute defects in the crystal's surface. "We still have a lot to learn about the chemical cues that the Shewanella use both individually and in colonies but they are incredibly efficient at converting organic inputs to electr...Beyond lipids: understanding the mechanics of atherosclerosis
.... A laminar flow of blood prompts stress fibers to orient in the healthy direction, while disturbed and low blood flows caused stress fibers to form in an unhealthy, random orientation. Chien's group is now working to understand how both stretching and shear forces influence JNK activation. "We still need...... crystal system, in which the rod-shaped molecules orient in a parallel fashion. But whereas the alignment of molecular rods in a liquid crystal system can only be triggered by increasing the density or the length of rods, the ordering in the motility assay can also be triggered by increasing the density of...Unusual data shed new light on brain and inhibiting behavior
... researchers began looking at how healthy children orient toward an object of interest through eye movements alone. The study took an unexpected twist when doctoral student Sandy Saavedra reported a high level of multiple saccades, which are rapidly occurring glances toward a secondary object, van Donkela...