Bacteria&ProtistasFall2008

Bacteria&ProtistasFall2008 - October 23, 2008 Science...

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October 23, 2008 Science Headlines Bacteria & Protistas
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Hint: This weekend, it faces further extinction pressure from Homo spartanicus !” “Another animal nears extinction!” The power and ferocity are of this animal are highly over- rated. It’s rarely seen in Michigan. But, it can be found, and especially heard , in many parts of the state. Regardless of what its supporters think, it’s just a member of the weasel family. Wolverine!! Wolverinus obnoxious (A picture of the only good wolverines.) What is it?
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Bacteria disappearing from our bodies may harm human health Boston Globe Staff February 25, 2008 CAMBRIDGE - Not feeling quite yourself? No wonder. In a sense, you aren't really you. Scientists estimate that 90 percent of the cells contained in the human body belong to nonhuman organisms - mostly bacteria, but also a smattering of fungi and other teensy entities. Some 100 trillion microbes nestle in niches from our teeth to our toes. But what's setting science on its heels these days is not the boggling numbers of bugs so much as the recognition that they are much more than casual hitchhikers capable of causing disease. They may be so essential to well-being that humans couldn't live without them .
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We're not individuals, we're colonies of creatures ," said Bruce Birren, director of microbial sequencing at the Broad Institute, a research center affiliated with Harvard and the Massachusetts Institute of Technology. His team is part of a newly launched effort by the US National Institutes of Health to map the DNA and complete the first comprehensive census of microbial species that are inseparable from human existence. " We can't take nutrition properly without bacteria . We can't fight bad germs without good germs ," he said. "It may turn out that secretions from bacteria affect not only long-term health, but hour-by-hour moods -- could a person's happiness depend on his or her bugs? It's possible. Our existences are so incredibly intertwined ."
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this strange union may be headed for trouble because of overuse of antibiotics and antiseptic lifestyles that deter the transfer of vital strains of bacteria that have swarmed in our systems at least since early humans ventured out of Africa. Some strains of bacteria are disappearing from humans , and may be linked to germ-destroying substances in everything from hankies to hamburger. "We're seeing the equivalent of global warming in the human ecosystem," said Dr. Martin J. Blaser, professor of microbiology and chairman of the department of medicine at New York University. "Changes of huge magnitude are occurring over a few generations. Nature famously abhors a vacuum - the bacteria disappearing from our systems . .. might be replaced by organisms that aren't nearly as
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This note was uploaded on 04/29/2009 for the course HB 265 taught by Professor Jaemincha during the Spring '09 term at Michigan State University.

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Bacteria&ProtistasFall2008 - October 23, 2008 Science...

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