Evolution adds and subtracts, and nowhere is this math more evident than in vertebrates, which are programmed to have five digits on each limb. But many species do not. Snakes, of course, have no digits, and birds have three.
Evolution
Sep 4, 2011
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Research based at Princeton University has revealed that newly fertilized cells only narrowly avoid degenerating into fatal chaos. At the same time, scientists have discovered that embryos have acquired a mechanism to contain ...
Cell & Microbiology
Aug 22, 2011
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Vincent Fleury, a researcher at the Paris Diderot University, studied the early stage of development when embryonic cells first form a flat sheet of cells before folding into a U-shape, resembling a folded pancake. He demonstrated ...
General Physics
Aug 18, 2011
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Scientists at the Gladstone Institutes have gained new insight into the delicate relationship between two proteins that, when out of balance, can prevent the normal development of stem cells in the heart and may also be important ...
Cell & Microbiology
Aug 15, 2011
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The possibility of developing stem cells from a patient's own skin and using them to treat conditions as diverse as Parkinson's disease, Alzheimer's disease and cancer has generated tremendous excitement in the stem cell ...
Cell & Microbiology
Aug 4, 2011
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(AP) -- A lawsuit that had threatened to end the Obama administration's funding of embryonic stem cell research was thrown out Wednesday, allowing the U.S. to continue supporting a search for cures to deadly diseases over ...
Biotechnology
Jul 27, 2011
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Specialized structures used by cancer cells to invade tissues could also help them escape protection mechanisms aimed at eliminating them, a UA-led research team has discovered.
Cell & Microbiology
Jul 26, 2011
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(PhysOrg.com) -- At fertilization, a massive release of the metal zinc appears to set the fertilized egg cell on the path to dividing and growing into an embryo, according to the results of animal studies supported by the ...
Biochemistry
Jul 22, 2011
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Stem cells from early embryos can be coaxed into becoming a diverse array of specialized cells to revive and repair different areas of the body. Therapies based on these stem cells have long been contemplated for the treatment ...
Cell & Microbiology
Jul 13, 2011
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For nearly two decades, the medical world and the American public have grappled with the lightning-rod topic of stem cells, in particular the controversy surrounding cells from human embryos. But when researchers four years ...
Cell & Microbiology
Jul 5, 2011
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