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Archive del 22 febbraio 2010

La composizione del veleno degli ofidici è molto varia, presentano un elevato tenore in proteine (circa il 90%) con attività enzimatica, molecole organiche non proteiche e sostanze inorganiche.

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  • First successful vaccination against 'mad cow'-like wasting disease in deer
    Researchers say that a vaccination they have developed to fight a brain-based, wasting syndrome among deer and other animals may hold promise on two additional fronts: protecting US livestock from contracting the disease, and preventing similar brain infections in humans.
  • Researchers move closer to new range of biosensors
    Researchers have found a way of binding peptides to the surface of gallium nitride in a way that keeps the peptides stable even when exposed to water and radiation. The discovery moves researchers one step closer to developing a new range of biosensors for use in medical and biological research applications.
  • Alaska fish adjust to climate change by following the food
    Not all species may suffer from climate change. A new analysis shows that Dolly Varden, a species of char common in southeast Alaska, adjust their migrations so they can keep feasting on a key food source -- salmon eggs -- even as shifts in climate altered the timing of salmon spawning.
  • Trade winds ventilate the tropical oceans: Explanation for increasing oxygen deficiency
    Long-term observations indicate that the oxygen minimum zones in the tropical oceans have expanded in recent decades. The reason is still unknown. Now scientists have found an explanation with the help of model simulations: A natural fluctuation of the trade winds.
  • Microplastics in the ocean: Biologists study effects on marine animals
    Ingestion of microplastic particles does not mechanically affect marine isopods, according to new research. The study marks the launch of a series of investigations aimed at forming a risk matrix on the sensitivity of different marine species to microplastic pollution.
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