Archive: 5/01/2011

Oxygen's challenge to early life

The conventional view of the history of the Earth is that the oceans became oxygen-rich to approximately the degree they are today in the Late Ediacaran Period (about 600 million years ago) after staying relatively oxygen-poor ...

dateJan 05, 2011 in Earth Sciences
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Where MRSA colonizes on the human body

When methicillin-resistant S. aureus (MRSA) is carried in the nose (nares), it is a risk factor for an invasive infection, including a surgical site infection. Some studies have found that the heavier the carriage of MRSA ...

dateJan 05, 2011 in Cell & Microbiology
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