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Showing results 41-51 of 200 for 'Biology'

  • olfactory-fingerprint-tn
    Science Tips, June 2015

    Three updates from the the Weizmann Institute: colon cancer genes go back before moving forward, providing an opportunity for clinical intervention; UV light helps pinpoint why stars that explode as supernovas blow up in the first place; and identifying a personal olfactory ""fingerprint"" that could help screen organ donors and detect diseases such as Alzheimer's.

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    How to Mix the Perfect Cocktail

    The fine art of mixing drug cocktails - such as for cancer treatment - is incredibly complicated, especially once you get into three or more ingredients. The numbers of possible interactions and side effects are virtually infinite. Now, a new model from the lab of Prof. Uri Alon lets scientists compare combinations of drugs to determine which work well together, and with the fewest side effects. This is a major step forward in personalized medicine.

  • bacterial-growth-rates-tn
    Science Tips, September 2015

    Three updates from the Weizmann Institute: discovering how the tiny, beautiful sea sapphire changes color – and even becomes invisible; using light to get nanoparticles to self-assemble could lead to rewritable paper, contaminant removal, and drug delivery; measuring how fast bacteria grow sheds new light on how our microbiome is tied to our health.

  • germs-humans-numbers-tn
    Germs, Humans, and Numbers

    Our bodies are full of bacteria, which comprise the microbiome – now often called the ""second genome"" because of its crucial role in many aspects of our lives. But how much bacteria is there? The accepted ratio was 10:1 – meaning 10 times as many microbes as human cells, making us mostly microbiota. But Weizmann scientists have now shown it's much more equal.

  • artificial-cells-act-like-the-real-thing-tn
    Artificial Cells Act Like the Real Thing

    One of the problems with designing artificial systems – from artificial intelligence on – is getting them to mimic real life. But now, Prof. Roy Bar-Ziv and his team have created an artificial cell system that reproduces the natural, dynamic behavior of protein synthesis – a breakthrough that is likely to lead to a host of new uses, including pharmaceutical and chemical.

  • food-clock-tn
    Natural Metabolite Might Reset Aging Biological Clocks

    As we age, our biological clocks wind down – but why? Dr. Gad Asher, who studies circadian clocks – genetic mechanisms that keep us in tune with cycles of day and night – has identified a link between the clocks and a group of metabolites called polyamines. Found in many foods, polyamines could fight aging – as they did in Dr. Asher's mice.

  • stress-coping-molecule-tn
    Stress-Coping Mechanism Helps Mice Make New Friends

    What makes us reluctant or willing to leave our social comfort zones? Prof. Alon Chen and his team in the Department of Neurobiology found that a molecule that helps the brain cope with stress appeared to act as a ""social switch"" in mice, causing them to either increase interactions with ""friends"" or seek to meet ""strangers."" Since a similar system exists in the human brain, the findings may help explain why some people are better at making new friends, and shed light on the social difficulties experienced by those with autism, schizophrenia, and more.

  • manot-cave-cranium-tn
    Science Tips, March 2015

    Four updates from Weizmann: an ancient skull may provide clues to human-Neanderthal mating; Weizmann and SpaceIL are holding an online trivia game about the moon for kids 6-18; working with Penn, scientists find that each heartbeat is a careful synchronization; the popular award for Israeli women postdocs is accepting applications.