Study finds no evidence hormone benefits autism
...ceived an inactive salt solution, scientists could tell no difference between the groups when the study ended. The investigation was double-blind, meaning that neither clinicians nor parents knew which of the two treatments the children received until evaluations were complete. "Following news reports,...Fossil mayflies can be used to 'weigh' ancient atmospheres
...ter-billion years, at least so far as mayflies can tell us." Members of the insect order Ephemeroptera, with some 2,000 species, mayflies are found around the world in freshwater habitats. They are much beloved by fly fishermen, who know that a fresh hatch of mayflies means trout will be biting and dep...... "The calcium carbonate crystalline structures can tell you the age of the individual fish, and how fast or slow it grew at a particular time," he said. Over the last decade researchers have begun to use it to reconstruct the chemical and physical environment experienced during development." The authors ...Millenium bug found by CSIRO scientists
...ll water striders so we know exactly what they can tell us about the health of our streams and waterbodies." Bugs from the Veliidae family are often found in tropical and subtropical regions of the world and occur on many oceanic islands. Relatives are the only insects to inhabit the surface of the open o...Researchers glimpse polio virus as it enters host cell
...ges, together with the receptorvirus structure, to tell a story of an extremely dynamic particle. From the moment it attaches to its host, the poliovirus appears to make tiny adjustments in its protein shell that allow it to grab onto its host receptor more tightly. Once bound, the virus creates temporary...Bees wearing reflectors help scientists track insects training flights
... were interested in what orientation flights might tell them about how bees learn to navigate -- a highly demanding ability for a creature with a brain the size of a grass seed. The researchers used harmonic radar, a technology developed in 1996 by the Greenwich group to allow individual insects to be tr...Robots eavesdrop on cellular discussions
...cular cell, but they haven't had a "guide book" to tell them which gene products likely touch each other. "Now they have one," said Dr. James Anderson, a molecular biologist at the National Institute of General Medical Sciences, one of the NIH components that funded the study. "Dr. Fields' work adds an e...Study: exercise, even without weight loss, is good for the heart
...ions. "We now have the data for physicians who can tell their patients that they shouldn't focus so much on the scale," said Kraus, who led the study. "These patients should not become discouraged and give up exercising, because our study shows that these patients are getting healthier even if they don't...UF researcher develops high blood pressure drug using gene therapy technique
...y rewriting the genetic instructions that normally tell the body to create the sites, or "receptors," where harmful hormones act in the heart and kidneys. To do so, scientists reordered the chemical units in a fragment of DNA known to be responsible for receptor production. The new material is then kn...Hopkins reports new technology to unmask hidden gene mutations
...or, Howard Hughes Medical Institute. "Now, we can tell people who seek testing, with much greater certainty, whether or not they have inherited specific genetic predispositions to colon cancer." The team from the Johns Hopkins Oncology Center and the Howard Hughes Medical Institute overcame a major obs...ASU scientists probe salamander mysteries
...an in charge of the sequencing. The sequences will tell them how the viruses are related, and by manipulating the DNA they hope to identify the genes determining what animals the viruses can infect, what environments let them thrive, and how they cause infections. The long-term prognosis for the disappe......dation president Sylvia Rowe commented, "Consumers tell us that they respond best to positive reinforcement rather than negative messages. I am encouraged that the shift in reporting wellness and health promotion may benefit public understanding, and perhaps even encourage behavior change over time." Al...Pain drug reveals what most already know - men's and women's brains are simply different
...-called "off" nerve cells in the RVM that normally tell thespinal cord to shut off pain signals. In females, kappa-opioids actually excitethe off neurons, which would relieve pain. In their study, the researchers also discovered that female rats receivedsignificantly more pain relief when mu opioid was in...Discovery of taste receptors may make bitter a bygone taste
...y different bitter molecules, but the brain cannot tell the difference. This finding suggests that over the course of mammalian evolution there was no selective advantage to discriminate among the nuances of bitter. Rather, survival was aided by simply recognizing and avoiding bitter's many forms. In a...New fossil snake with legs, reported in Science
...eir history." Rieppel said that it is difficult to tell how the legs themselves might have been used, since they are too small in relation to the animal's whole body to have any locomotor function. Modern pythons have a rudimentary hindlimb, usually little more than a "claw" of cartilage tipped with bone ...New research proves fullerene can be cosmic carbon carriers
... to learn why these things are there and what they tell us about carbon forming in the universe. We need to figure out how to establish their existence and how to search for it." The research was supported by grants from the NASA Cosmochemistry and Exobiology Program....EPA, OSHA and CPSC accept non-animal system for screening chemicals' skin corrosiveness
...agencies are preparing Federal Register notices to tell industry and other research institutions they can use the non-animal test for regulatory purposes. The regulatory actions were announced today by the National Toxicology Program, which is headquartered at the National Institute of Environmental Hea...New $4.2M research center at U-M seeks to see cancer more clearly
...d and treatment begins, doctors may not be able to tell for months if their efforts are working well enough or at all. Now, a new research center at the University of Michigan Health System will tackle these crucial issues using sophisticated medical imaging technology. With $4.2 million in funding from t...Researchers find key to growing, differentiating human cells
...ntiating. Kniss said he could tell the clumps of cells were changing their function when they slowed reproduction and increased their metabolic rate. The cells consumed more glucose and produced more lactic acid. They also be...Oxidants play major role in healing of damaged blood vessels
...ing of damage to the cardiovascular system and may tell us why anti-oxidants haven't worked. Without the right mix of oxidants - also called "free radicals" -- at the sites of vascular injury, blood vessel walls won't heal. This ...