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Tag: "walls" at biology news

UCLA/Toronto researchers unlock key to memory storage in brain

...ted before. The cage was outfitted with patterned walls and a unique smell. To visualize which brain cells stored the mouse's memories about the cage, the scientists tracked a genetic marker that reveals recent neuron activity. When the team examined the animals' amygdalas after the experiment, they...

Wheat can fatally starve insect predators

.... "Usually we expect the plant to fortify its cell walls or make poisons to use against insects and pathogens." Instead, the researchers found that a specific protein, called HFR-3, one of a group of substances called lectins, is capable of binding with a carbohydrate complex in the Hessian fly larvae. ...

Scientists use nanoparticle to discover disease-causing proteins

...used dendrimers because they can pass through cell walls efficiently with little disturbance to the cells and then label specific proteins with isotopic tags while cells are still alive. This allows the scientists to determine the activities of proteins that play roles in specific diseases. Proteins carry ...

Blame the brain for high blood pressure

...onal adhesion molecule-1), which is located in the walls of blood vessels in the brain. JAM-1 traps white blood cells called leukocytes which, once trapped, can cause inflammation and may obstruct blood flow, resulting in poor oxygen supply to the brain. This has led to the idea that high blood pressu...

Soft-cell approach cuts animal tests

... small, they may also be able to pass through cell walls in organisms, and their reactions inside the body are relatively unknown. "These tiny new substances are the tip of a huge chemical iceberg," says Hayes, Manager of the Chemical Safety and Applied Toxicology Laboratories at the University of New ...

Nanotextured implant materials: blending in, not fighting back

...t of stents need to be replaced because the artery walls thicken in and around them in a process known as restenosis. Drug-coated stents were introduced years ago as one way to combat this problem, but concerns have surfaced recently about increased clotting. Instead of using chemistry to fight the body...

Lighting up life: Cold Spring Harbor Protocols presents tips for creating glowing plants

...lenges to GFP detection: plants harbor tough cell walls and enormous subcellular structures that interfere with visualization, and their natural green pigments can mask the luminescent qualities of GFP. The current issue of Cold Spring Harbor Protocols includes a freely available article that addresses...

Iowa State scientists demonstrate first use of nanotechnology to enter plant cells

...sfully used nanotechnology to penetrate plant cell walls and simultaneously deliver a gene and a chemical that triggers its expression with controlled precision. Their breakthrough brings nanotechnology to plant biology and agricultural biotechnology, creating a powerful new tool for targeted delivery into...

Cytomegalovirus exacerbates atherosclerosis through an autoimmune mechanism

...on the surface of the cells that line the arterial walls (endothelial cells) and to cause their death (apoptosis) through a mechanism called "molecular mimicry." Using a biocomputational technique, the new study shows that the same anti-Cytomegalovirus antibodies, isolated from patients with coronary ar...

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