Duke Researchers Discover Central Role Of Nitric Oxide In Hemoglobin Action
... shape and, thereby,its function. Hemoglobin is "a classic allosteric protein" becauseits function depends on whether or not oxygen is bound to it,Stamler said.Now, the Duke researchers said, NO is also involved in the allosteric transitionof hemoglobin....Photosystem I -- An Intermediate Step -- May Not Be Necessary For Plants
...s all mean? No one knows yet." The Z scheme is the classic example of how scientists describe the light-dependent reactions of photosynthesis. When photons -- particles of light -- enter a plant cell, their energy is used to power two sequential light-dependent reactions. In Photosystem II (PSII), the ligh......d by Varley and Gradwell has long beenconsidered a classic of population ecology. And yet they leftsome tanta...arley died in 1983 and Gradwell in 1974, leaving a classic studyand an opening for further study. "I had access to the data when I was a Ph.D. student atO...Where Fossils Fear To Tread: Scientists Follow Genes To An Ancient Ancestor
... And appendages, said Carroll, have been used as classic examples of independent evolution. But now Carroll and his colleagues argue that the problem of developing limbs, be they claws or wings, was solved just once a very long time ago, and that the genetic mechanism is still at work. "Everybody ...New Mechanism To Explain Carbon Monoxide Poisoning Identified
... of CO exposure are virtually unknown. The classic explanation for CO's poisonous action is that it b...ations,and a mechanism that has nothing to do with classic hypoxia," Thom concludes. On a more practical side, he hopes that the study's findings will...U.S. Scientists Honored For Lifetime Contributions In Hepatitis Research
...Purcell and Gerin, "Their work is a classic model of dedication to fighting disease across the spectrum -- from the laboratory bench to the patient’s bedside. We are grateful to the King Faisal Foundation for its recognition of ...Virginia Tech Researchers Assess Watershed Management For EPA, NSF
... "The deterioration of the Chesapeake Bay is a classic example ofunmanaged urban and agricultural evelopment," Diplas adds. "The goal of ourproject is to help local governments learn how to allow for urban developmentwhile sustaining good environmental quality." The project study site is theUpper Roanok...Rockefeller University Researchers Hunt For Type 2 Diabetes Susceptibility Genes
... In about 5percent of cases, inheritance follows a classic autosomal dominantpattern?anyone in a family who has one copy of the defective gene is likely todevelop hyperglycemia or increased levels of blood glucose?and is characterizedby an early age of onset.. Known as maturity onset-diabetes of the young (M...Jefferson Scientists Link Some Cases Of Scleroderma To Damage From Lingering Fetal Cells
... transplant. "What’s unusual is that in classic chronic graft-versus-host disease, the clinical picture looks like scleroderma. The skin becomes hard and thick," Dr. Jimenez says. "These findings may open up some potentially new and important avenues in the treatment of scleroderma.......ols, fire, burial, and cave shelters.The so-called classic Neanderthals were robust and had a large, thick skull, asloping forehead, a chinless jaw, and a brain somewhat larger than that ofmodern humans; they stood slightly over 5 feet. It is unclear whetherNeanderthals were replaced by Homo sapiens sapiens ......le cells. The mice even develop "nutmeg liver," a classic finding in human cardiomyopathy, caused by the back-up of blood flow through that organ. Diagnostic images of affected mice, taken with ultrasound or cardiac catheterization, also are identical to human disease. In fact, the researchers, working w...Master Molecule Forms Brains In Frogs And Elbows In Mice
... his research to better understanding not just the classic "joint diseases," such as arthritis, but also a gamut of medical conditions in which there is either too much or too little bone for the body to handle, such as osteoporosis. Harland's most recent work, in collaboration with Dr. Andrew McMahon's grou...Gene Linked To Glaucoma, Hydrocephalus, And Other Birth Defects
...stand organ systems in the human." With roots in a classic scientific finding of more than 50 years ago, the...researchers immediately made the connection to the classic ch mutantand obtained mice from the Jackson Laboratory to test their suspicions. Bycross-breeding th...Severity Of Classic Heat Stroke Recognized
...nternalMedicine. "Unlike previous descriptions of classic heat stroke, most of the patients inthis study suf...g prolonged heat. In this study, mostpatients with classic heat stroke suffered the more profound health consequencesassociated primarily with exertional heat ...Babbitt To Help Explore Depths Of Lake Tahoe
... to know how best to restoreit. This project is a classic case of sound science guiding environmentalrestoration." Babbitt will go aboard the USGS research vessel, the Inland Surveyor, toobserve the use of acoustic sonar by U.S. Geologic Survey scientists. Thistechnology will allow development of ...Debilitating Pancreatic Disorder Linked To Cystic Fibrosis Gene
...sameas the gene that causes cystic fibrosis. The classic features of cysticfibrosis include severe lung disease, abnormal sweat production and pancreaticinsufficiency. The research team conducted extensive genetic analysis of 27patients referred to Duke with idiopathic chronic pancreatitis. Of this group......ore bring forth more evidence in opposition to the classic model with their report appearing inthe September 10 Nature. The authors argue that the first steps in floor plate development occur earlier than was initially thought, in reaction toinducing factors other than those emitted by the notochord. The new......and others arguing in favor of proteins. "It wasa classic chicken-and-egg argument. RNA has the genetic information necessaryto reproduce but needs proteins to catalyze the reaction. Conversely, proteinscan catalyze reactions but cannot reproduce without the information supplied byRNA," says Dr. Bartel. ...Fully Endoscopic Brain Surgery At Cedars-Sinai Medical Center
...fully, we canremove it fully." Baker's tumor was a classic example, says Dr. Shahinian. "In his case, a portionof the tumor extended around a corner into the right cavernous sinus -- a verydangerous area. This represents a venous pool of blood that houses the internalcarotid artery, one of the main sources o......g a beer-like beverage wasthe least expensive. The classic sparkling wine mthod champenoise, involving asecondary fermentation in the bottle as in champagne making, was the mostexpensive, but yielded the highest quality beverage. Bottling and packaging thevalue-added product also varied. The retail costs wou...