As they develop, vertebrate embryos form vertebrae in a sequential, time-controlled way. Scientists have determined previously that this process of body segmentation is controlled by a kind of "clock," regulated by the oscillating ...
Cell & Microbiology
Nov 13, 2012
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Notch – the protein that can help determine cell fate – maintains a stable population of basal cells in the prostate through a positive feedback loop system with another key protein – TGF beta (transforming growth factor ...
Cell & Microbiology
Nov 1, 2012
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Plant roots are surrounded by thousands of bacteria and fungi living in the soil and on the root surface. To survive in this diverse environment, plants employ sophisticated detection systems to distinguish pathogenic microorganisms ...
Biotechnology
Nov 1, 2012
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(Phys.org)—NIST's ability to determine the composition and physics of nanoscale materials and devices is about to improve dramatically with the arrival of a new near-field scanning microwave microscope (NSMM).
Nanophysics
Oct 1, 2012
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(Phys.org)—It has long been known that diversity of form and function in birds' specialized beaks is abundant. Charles Darwin famously studied the finches on the Galapagos Islands, tying the morphology (shape) of various ...
Plants & Animals
Sep 24, 2012
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In uncertain environments, organisms not only react to signals, but also use molecular processes to make guesses about the future, according to a study by Markus Arnoldini et al. from ETH Zurich and Eawag, the Swiss Federal ...
Cell & Microbiology
Aug 16, 2012
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Beneath the surface of the earth, an influential community of microbes mingles with plant roots. In the first large-scale analysis of those communities, scientists have now catalogued and compared the hundreds of types of ...
Biotechnology
Aug 1, 2012
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Not all adult stem cells are created equal. Some are busy regenerating worn out or damaged tissues, while their quieter brethren serve as a strategic back-up crew that only steps in when demand shoots up. Now, researchers ...
Cell & Microbiology
Jul 19, 2012
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(Phys.org) -- Max Planck scientists have found out that the olfactory system in hermit crabs is still underdeveloped in comparison to that of vinegar flies. While flies have a very sensitive sense of smell and are able to ...
Plants & Animals
Jul 4, 2012
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The theory that pigeons' famous skill at navigation is down to iron-rich nerve cells in their beaks has been disproved by a new study published in Nature.
Plants & Animals
Apr 11, 2012
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