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Showing results 1-11 of 209 for 'Biology'

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    Science Tips, October 2014

    Three updates from the Weizmann Institute labs: tiny phytoplankton can fix as much carbon as a rainforest; is jet lag making you fat?; bringing a promising compound for inflammatory diseases, such as MS, to market.

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    Could Lowering Oxygen Levels Reduce Jet Lag?

    <em>The Wall Street Journal</em> reports on research by Weizmann's Dr. Gad Asher that ""shaved days off mice's recovery from a simulated transatlantic flight."" The work could lead to ways of treating jet lag post-flight with low-oxygen treatments.

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    To Stop Cancer, Block Its Messages

    Cells send a constant stream of messages to their nuclei for making day-to-day decisions. But this rapid, long-distance communication system is vulnerable to mutations that can lead to unstopped, repeated messages – a ""spam attack"" – that promotes cancer. Now, Prof. Rony Seger and his team have identified a molecule that stops cancer cells from getting their ""mail.""

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    Artificial Sweeteners Hit a Sour Note

    Artificial sweeteners have long been promoted as diet and health aids – but Weizmann scientists have discovered that such products may be causing our gut bacteria to trigger harmful metabolic changes. In other words, the sweeteners may be leading to the very diseases – such as obesity – they were supposed to help prevent.

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    Gut Bacteria, Artificial Sweeteners, and Glucose Intolerance

    Artificial sweeteners have long been promoted as diet and health aids. But breaking research shows that these products may be leading to the very diseases they were said to help prevent: Dr. Eran Elinav and Prof. Eran Segal have discovered that, after exposure to artificial sweeteners, our gut bacteria may be triggering harmful metabolic changes.

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    Divine Secrets of the Ant Sisterhood

    Ants are altruistic and cooperative, but how do they communicate and assign roles? A Weizmann team is using tools from information theory, statistical and theoretical physics, computer science, systems biology, neuroscience, and biology to investigate.

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    Rethinking Lymphatic Development

    Lymphatic vessels were first described by Hippocrates; centuries later, we're still learning about them. Weizmann's Dr. Karina Yaniv recently discovered that the lymphatic system does not develop as previously thought. Interestingly, says The Scientist, after all these years, three other studies on lymph vessel origin came out at the same time.

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    Kathy Bates: My Battle with Lymphedema

    Oscar winner Kathy Bates opens up to Larry King about developing lymphedema – which occurs when the lymph nodes are removed or blocked – after a double mastectomy. Now a lymphedema activist raising awareness and funds, she gets hope from research like Dr. Karina Yaniv's, whose breakthroughs include being the first to grow lymphatic cells in the lab.

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    Visualizing Algae-Eating Viruses From Space

    Weizmann scientists Dr. Assaf Vardi and Prof. Ilan Koren write in <em>Science 2.0</em> about the importance of algae. Though tiny, their massive blooms play a vital role in both marine ecology and climate regulation, but we know very little about the viruses that kill them. The Weizmann team is the first to attempt to quantify the viruses.