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Tag: "patches" at biology news

Simple explanation for complex pattern of feather development

...h a retrovirus. The results were seen in localized patches and demonstrated that a simple relationship between developmental genes could be the basis for formation of feather structures. This was the first documentation, in any plant or animal, that signaling molecules in development can actually behave as e...

Scripps research scientists solve structure of a critical innate immune system protein

... molecule. This surface also contains two distinct patches that are rich in positively-charged residues, suggesting it as a possible binding site for negatively-charged double-stranded RNA. "It's a sensational piece of work," says Scripps Research Professor Bruce Beutler, M.D., who studies TLR signaling tog...

Researchers use 3-D imaging system to unveil swimming behavior of microscopic plankton

...als called zooplankton are swept into clusters and patches by ocean currents. The very survival of many zoopl...century ocean scientists have suspected that these patches form when the zooplankton swim against the ocean currents. In all those years, however, an understan...

Primates on the brink

...er red colobus of Kenya are now restricted to tiny patches of tropical forest, leaving them vulnerable to rapid eradication. Hunters kill primates for food and to sell the meat, traders capture them for live sale, and loggers, farmers, and land developers destroy their habitat. "More and more, mankind's clo...

Prescription Drug Patches Gaining Ground, Tackling New Therapies

...ce and reduce drug side effects, prescription skin patches are rapidly becoming an important healthcare produ...logy is set to make further inroads as transdermal patches for a host of new conditions wind their way through the development and clinical trial process. Gro...

Biodiversity hotspots identify conservation priorities

...untaintops in Baja California, and a few scattered patches in the southern United States (represented by the Madrean Sky Islands, a series of about 40 mountain-tops in southern Arizona and New Mexico, and other mountaintops in Texas, including part of Big Bend National Park). This hotspot is home to about 5...

Tiny scaffolding allows stem cells to become working fat cells

...owth medium. While useful, these "two-dimensional" patches fail to mimic all the tasks performed by cells in vivo. Specific genes, proteins and hormones normally produced by healthy cells are often absent in two-dimensional colonies. "The PET fibers are spun out onto a mat that resembles the intracellular m...

Growth in the sea comes down to a struggle for iron

... changed quickly and constantly, breaking into two patches and streaming out into a long, narrow strip. The major night-time task was to steam in crisscrossing transects to re-do the map of the patch because of this rapid change," says Wells. The two vessels worked together in the patch for 12 days but oper...

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