From the category archives:

Biology

Using novel imaging, labeling, and data-analysis techniques, scientists from the California Institute of Technology (Caltech) have been able to visualize, for the first time, large numbers of cells moving en masse during some of the earliest stages of embryonic development.
The findings not only provide insight into this stage of development–called gastrulation–but give a more general [...]

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With the aid of a straightforward experiment, researchers have provided some clues to one of biology`s most complex questions: how ancient organic molecules came together to form the basis of life.
Specifically, this study demonstrated how ancient RNA joined together to reach a biologically relevant length.
RNA, the single-stranded precursor to DNA, normally expands one nucleic base [...]

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First Functional Stem-cell Niche Model Created

by mokosam on December 23, 2008

Like it or not, your living room probably says a lot about you. Given a few uninterrupted moments to poke around, a stranger could probably get a pretty good idea of your likes and dislikes, and maybe even your future plans. Scientists at the Stanford University School of Medicine employing a similar "peeping Tom" tactic [...]

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In its annual list of the year`s top ten scientific breakthroughs, the journal Science has given top honors to research that produced "made-to-order" cell lines by reprogramming cells from ill patients. These cell lines, and the techniques for producing them, offer long-sought tools for understanding — and hopefully someday curing — difficult-to-study diseases such as [...]

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A new study led by researchers at Albert Einstein College of Medicine of Yeshiva University has clarified how two major variants of HIV differ in their ability to cause neurologic complications. The finding, published in Journal of Neuroscience, highlights a new target for drugs that could prevent HIV-associated dementia, an incurable and increasingly common [...]

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heart

by mokosam on November 9, 2008

Roll over the heart illustration to identify anatomical structures and hear pronunciations. In the human body, the heart is usually situated in the middle of the thorax with the largest part of the heart slightly offset to the left (although sometimes it is on the right, (dextrocardia), underneath the breastbone. The left lung is smaller [...]

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