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Tag: "surface" at biology news

Three deadly parasite genomes sequenced

...y decreased contact surface. This reduced contact surface makes it harder for barnacles to attach, and reduc...7%. When applied to the ship hull, this artificial surface enables ships to ´self-clean´, and a speed of 4-5 knots would remove all organisms attached with lit...

Researchers at UGA provide first look at protein expression in Chagas disease-causing parasites

...y decreased contact surface. This reduced contact surface makes it harder for barnacles to attach, and reduc...7%. When applied to the ship hull, this artificial surface enables ships to ´self-clean´, and a speed of 4-5 knots would remove all organisms attached with lit...

Bacteria recognize antimicrobials, respond with counter-defenses

...that acts as a watchtower and interceptor near the surface of bacteria cell membranes. The peptide binding ac...sible for products that fortify the bacterial cell surface and protect the bacteria from being killed. ...

Discovery of T-cell 'traffic control' boosts new drug promise

... trafficking by occupying a receptor on the T cell surface that suppresses the cells' normal response to a "forward march" signal. T cells respond by chemotaxis -- moving from areas of lower to higher concentration of a signaling molecule known as a chemokine. Studies by the two scientists have shown that S...

Researchers create infectious hepatitis C virus in a test tube

...irm that a molecule called CD81, which sits on the surface of the human cell membrane, plays a crucial role i...d that CD81 molecules that are not attached to the surface of host cells compete with membrane-bound CD81 and inhibit entry of HCV into the cell. They also sho...

Envisat and ERS-2 reveal hidden side of Hurricane Rita

... of the radar image mean higher backscatter due to surface roughness. This roughness is strongly influenced b...R image to calculate the speed of Hurricane Rita's surface wind fields ?showing maximum wind speeds in excess of 200 kilometres per hour. "The most detailed ...

MERIS monitoring tracks planetary photosynthesis levels

...ivity'. FAPAR has been recognised as a fundamental surface parameter by international organisations including the Global Climate Observing System (GCOS), charged with providing data on the Earth's climate system. Vegetation plays a critical role on Earth as all animals and humans ultimately depend on it fo...

Quantum dots provide a faster, more sensitive method for detecting respiratory viral infections

...rent "linker" molecules that bind to different RSV surface structures. "It's not much of a jump from two to five," Wright says. Quantum dots are available in a dozen different colors, and antibodies specific to the other four respiratory viruses have been identified and can be used as linker molecules. Such...

Team of international scientists departs today to discover the unknown in China's Himalayan region

...n habitat covering just 2.3 percent of the Earth's surface (roughly equivalent to the combined areas of the five largest U.S. states). This habitat originally covered 15.7 percent of the Earth's surface, an area equivalent in size to Russia and Australia combined. New hotspot analysis shows that an estimated...

Hopkins scientists uncover 'tags' that force proteins to cell surface

...undreds if not thousands of proteins to get to the surface of cells and stay there. Two natural proteins that...earchers discovered. Because proteins on the cell surface are "lock-on" sites for drugs and other molecules, as well as triggers of immune reactions, the find...

Otter adaptations: How do otters remain sleek and warm

... insulation abilities. They found that the cuticle surface structure of the underhairs and base of the less-abundant guard hairs are distinctively shaped to interlock, with wedge-shaped fins or petals fitting into wedge-shaped grooves between fins of adjacent hairs. Weisel and colleagues report their finding...

Leading scientists rank endangered dolphins, porpoises most in need of immediate action

...nd to catch. Because cetaceans need to come to the surface to breathe, if they are trapped underwater in fishing nets, they die. In 2003, researchers estimated that more than 300,000 cetaceans are killed in fishing gear each year in the world's oceans. "Rather than simply identifying the species or populati...

Lands surface change on Alaska tundra creating longer, warmer summers in Arctic

...he ground, solar radiation is absorbed by the land surface more readily and contributes to heating, thus accelerating the melting of snow and allowing for more plant growth. Over time, as the permafrost begins to melt, ancient organic matter that has been frozen for thousands of years is exposed, potentially...

Genome Sequence for Haemophilus Influenzae Completed

... insulation abilities. They found that the cuticle surface structure of the underhairs and base of the less-abundant guard hairs are distinctively shaped to interlock, with wedge-shaped fins or petals fitting into wedge-shaped grooves between fins of adjacent hairs. Weisel and colleagues report their finding...

Why do aneurysms form? New studies suggest leading role for white blood cells

...researchers looked at L-selectin, a protein on the surface of neutrophils that allow them to attach to tissue. They studied L-selectin production in the aortas of rats that had been injured with elastase or exposed to control conditions. They also studied mice that had been genetically altered by U-M researc...

Canada's first embryonic stem cell lines

...nd to catch. Because cetaceans need to come to the surface to breathe, if they are trapped underwater in fishing nets, they die. In 2003, researchers estimated that more than 300,000 cetaceans are killed in fishing gear each year in the world's oceans. "Rather than simply identifying the species or populati...

Novel targets found for the development of drugs to complement, or replace, statins

...nd to catch. Because cetaceans need to come to the surface to breathe, if they are trapped underwater in fishing nets, they die. In 2003, researchers estimated that more than 300,000 cetaceans are killed in fishing gear each year in the world's oceans. "Rather than simply identifying the species or populati...

Virulizin granted orphan drug status in Europe

...nd to catch. Because cetaceans need to come to the surface to breathe, if they are trapped underwater in fishing nets, they die. In 2003, researchers estimated that more than 300,000 cetaceans are killed in fishing gear each year in the world's oceans. "Rather than simply identifying the species or populati...

Bleach found to neutralize mold allergens

...ted fungal spores appeared smaller, and lacked the surface structures present on healthy spores. In addition, surface allergens were no longer detected by ELISA antibody-binding assays, suggesting that the spores were ...

Can two killers make a cure?

...ity of Pennsylvania in Philadelphia tried adding a surface protein from Ebola to HIV. Initial tests on mice s...ding HIV RNA, a stripped-down version of the Ebola surface protein RNA and the therapeutic gene to cells. The hybrid virus then self-assembles. Crucially, only...

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