Mouse embryo hints at how mammalian body forms
...and the other models studied may be informative of things we hadn't anticipated; in other words, the finding may make frogs more germane to us," says Zernicka-Goetz. Researchers have already identified molecular systems in frogs that are strongly implicated in inducing gastrulation, and these systems ...20th century marks achievements in food science and technology
...tions, the following stand out as some of the best things prior to and since sliced bread in the 1930s: 1900s: Vacuum packaging, which removes the atmosphere from food packages, invented to prolong the shelf life of foods. Hydrogenation process invented to keep unsaturated fats from turning rancid. U.S. a......ersation with another scientist over lunch brought things into sharper focus for Avise. He was explaining his laboratory's recent findings on modes of inheritance and patterns of geographical variation in mtDNA for small mammals. Avise's colleague remarked that this seemed analogous to the surname evolution...Experts to study informed consent in national gene transfer research
...nefits from studies," King said. "We hope to learn things that can help investigators provide the best possi... very highly regulated. We hope we will learn some things that will address not only research issues, but treatment issues as well -- how people understand w...UNC-CH scientists create world's smallest pieces of ice
...ith some other systems, but water does interesting things that make it unique and also make it somewhat difficult to understand." For example, a property of water that is bizarre -- yet taken for granted -- is that unlike almost all other substances, it becomes less dense as it freezes, Miller said. As a r......e key, he said, is having near equilibrium in such things as temperature and water content over enormous tim...ilicon, he remains skeptical of that theory. "Many things are possible. You can never imagine everything the universe can do. But we know it didn't happen her...Study may help clarify how cells grow
...ets of MAP kinase; that is, what are the important things it does, and how does it regulate cell growth?" In their search for the answer, Graves and his study collaborators at UNC Lineberger Cancer Center and Wayne State University in Detroit, focused on an enzyme called carbamoyl phosphate synthetase, or C...Pioneering evolutionist Ledyard Stebbins dies at age 94
... one of them. Evolution is the study of how living things change over time. Stebbins figured out how broadev...y to understandspecies in a different way. Certain things happen in plants that don't happen, or happen to a lesserdegree, in animals." In 1952, Stebbins was ...Life on land tied to gene expansion
...ariations between species have evolved. "These are things were still fleshing out," Dymecki says. "I would have to say its been a real whirlwind just to get this paper out." In fact, their current paper appears back-to-back in Development with a paper by a group at UCLA. The California researchers knocked-o...Complex mystery of amphibian decline calls for a new kind of science
... and more change. As humans move around, they move things with them, like any other animal. If there's one lesson that history teaches us, when humans move into an area, there's generally a loss of biodiversity." While much of the ecological change caused by human influence may not be reversible or even po...This is your adolescent brain on alcohol
... age 15 to 16, youth should be in school, learning things that will help them chart their future by guiding ...very actually happens more when you give the brain things to do," he observed. "This counters the notion that when you're recovering from something, you want...Amphibian declines complicated, disturbing
...erious decline all over the world. And some of the things that are killing frogs almost certainly have implications for other animal species, including humans." The multiple causes of amphibian declines, in fact, helps to illustrate how ecological changes may have a synergistic effect to compound problems,...ASU scientists probe salamander mysteries
...infected areas. Says Davidson, "there are so many things we don't know about the salamanders, really major questions like where the salamanders go when ponds dry up. The water comes back in the ponds and after a while, poof!, there they are again." Why salamanders are susceptible to the disease, whereas fr...Link between climate change, amphibian declines explored
...eas of amphibian die-offs. But one of the bizarre things about the declines is that many amphibians are dying in relatively undisturbed areas where man-made environmental degradation is not obvious." The researchers hope to determine if the same chytrid fungus is travelling around the world, if specific ...International trade imperils U.S. plants, animals and crops
...accompany the rise -- and that is just to maintain things as they are today," she said. "The first place to stop these exotic species is at the dock, or even better, before they leave their native country." D'Antonio will lay out her predictions in a talk on Sunday, Feb. 20, at this week's meeting of the...Researchers find structure of enzyme that catalyzes 78-million-year reaction
...m temperature for a molecule central to all living things to shed half the carbon dioxide attached to it. When this chemical supercharger does its job, however, the process can occur some 30 times in a single second, University of North Carolina at Chapel Hill biochemists Anna Radzicka and Richard V. Wolfe...Brain cell 'chorus' appears as attention increases
...using signals if you try to code for two different things -- the stimulus itself and the degree that one should pay attention to it -- with one type of signal, the rate at which neurons are firing." Niebur says the two different signals have to be connected. What your senses perceive will influence how much...Researchers successfully immunize mice against aggressive cancer
...cancer the way we immunize them to protect against things like polio," he said. And nothing would please doctors that treat melanoma more than the development of a method of keeping people from coming down with the disease. "Melanoma is a very aggressive form of skin cancer and prevention or early detection...Bitter taste receptors identified
...is dramatically increases the repertoire of bitter things you can taste, but since the receptors are all in the same cell and the cell simply fires when activated, you do not discriminate." Zuker is satisfied that the T2R family of genes represents at least a subset of bitter taste receptors, but there's......ion of fullerenes. "We have yet 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....