Retroviruses such as HIV that are already within cells are much more easily transmitted when they are next to uninfected cells than if they are floating free in the bloodstream.
Cell & Microbiology
Jul 28, 2009
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One of the earliest events that changes a normal cell into a malignant one is known as deoxyribonucleic acid (DNA) hypermethylation, a biochemical alteration that inactivates critical tumor-suppressor genes. A team of investigators ...
Bio & Medicine
Jul 23, 2009
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A wind storm that ripped across western China's Taklimakan desert kicked up hundreds of thousands of tonnes of dust that high-altitude winds then carried around the world in less than two weeks, a study says.
Earth Sciences
Jul 20, 2009
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Phosphate chains store energy and have many more different functions in a cell.
Cell & Microbiology
Apr 23, 2009
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Scientists from Germany today reported a major advance toward opening the doors of a carbohydrate-based medicine chest for the 21st Century. Much more than just potatoes and pasta, these carbohydrates may form the basis ...
Biochemistry
Mar 22, 2009
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