July 24, 2013
Mohenjo
Science
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The organism was initially called NLF, for “new life form”. Jean-Michel Claverie and Chantal Abergel, evolutionary biologists at Aix-Marseille University in France, found it in a water sample collected off the coast of Chile, where it seemed to be infecting and killing amoebae. Under a microscope, it appeared as a large, dark spot, about the size of a small bacterial cell.
Later, after the researchers discovered a similar organism in a pond in Australia, they realized that both are viruses — the largest yet found. Each is around 1 micrometre long and 0.5 micrometres across, and their respective genomes top out at 1.9 million and 2.5 million bases — making the viruses larger than many bacteria and even some eukaryotic cells.
But these viruses, described today in Science, are more than mere record-breakers — they also hint at unknown parts of the tree of life. Just 7% of their genes match those in existing databases.
“What the hell is going on with the other genes?” asks Claverie. “This opens a Pandora’s box. What kinds of discoveries are going to come from studying the contents?” The researchers call these giants Pandoraviruses.
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Electron microscopy image of a mimivirus particle.
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.Click link below for story and slideshow:
http://www.huffingtonpost.com/2013/07/20/virus-genome-fourth-domain-life_n_3624207.html?ref=topbar
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December 8, 2012
Mohenjo
Medical
American Cancer Society, awaited trip, business, chill in the air, dangerous rays, everyday health, Framingham Heart Study, fun in the sun, genes, genes risk for skin cancer, Genetics, Health, Mark Johnston, medicine, nature, person's predisposition for skin cancer, research, Science, Science News, skin cancer, SPF 40, study published in Genetics, sun's dangerous rays, sunscreen, technology, travel, University of Alabama at Birmingham (UAB), vacation
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With the chill in the air in many parts of the country and the threat of blizzards brewing, that long awaited trip to the islands couldn’t come at a better time.
And as with any vacationer traveling to a hot climate, the No. 1 item on your packing list is sunscreen. However, according to a new study published in Genetics, that SPF 40 may not completely protect you from the repercussions of the sun’s dangerous rays. Turns out, your genes may put you at greater risk for skin cancer than UV exposure.
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.Click link below for article and video:
http://www.everydayhealth.com/skin-cancer/1205/less-fun-in-the-sun-skin-cancer-could-be-genetic-5974.aspx
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