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Tag: "surface" at biology news

Self-assembled nano-sized probes allow Penn researchers to see tumors through flesh and skin

...ze a tumor more than one centimeter below the skin surface using only infrared light. A team of chemists, bio...fluorescent materials called porphyrins within the surface of a polymersome, a cell-like vesicle, to image a tumor within a living rodent. Their findings, whic...

Protein offers way to stop microscopic parasites in their tracks

...are able to clip off sections of proteins near the surface of the cell membrane. Using other rhomboid proteases as guides, Brossier identified genes for five rhomboid proteases in Toxoplasma. Scientists showed that the parasite used at least four of those genes to make active proteases. When they looked at ...

LUCA technologies confirms real-time methane generation

...carbon deposits were less mature and closer to the surface of the earth. Luca scientists, employing the tools of modern biotechnology and genomics, have now shown that living methane generating, microbial consortia are present and actively forming methane within some of these hydrocarbon substrates. In addi...

Researchers devise way to mass-produce embryonic stem cells

...in three dimensions, while cells growing on a flat surface ?the bottom of the flask ?could not. "Cells grown on a flat surface don't act like they would in the body," Yang said. "The growing surface affects how a cell forms, wh...

Substance protects resilient staph bacteria

...joints and heart valves. A substance found on the surface of Staphylococcus epidermidis has, for the first time, been shown to protect the harmful pathogen from natural human defense mechanisms that would otherwise kill the bacteria, according to scientists at the Rocky Mountain Laboratories (RML), part of ...

Pulsating ultrasound enhances gene therapy for tumors

...uch as lasers and electric current, are limited to surface lesions or require needles to be inserted in the body. Pulsed-HIFU is non-invasive and can treat any area of the body accessible by ultrasound, the exceptions being the lungs and bones. Additional advantages of pulsed-HIFU include no scarring, limite...

A frog's life is food for thought

... survive on fat reserves. The frogs return to the surface after heavy rain, sometimes for as little as a wee...ation. "Despite the marked decrease in absorptive surface area of the gut of aestivating frogs, they appear to actually increase their absorptive capacity dur...

Polymers with copper show promise for implanted sensors

...d chemistry. In the bloodstream, clots form on the surface of implanted sensors or blood vessels contract aro...nction and prevents platelets from sticking to the surface of the blood vessels." Over the years, Meyerhoff and collaborators have developed nitric oxide-rele...

Robot-based system developed at Carnegie Mellon detects life in Chile's Atacama desert

...nsect and stopped occasionally to perform detailed surface inspection, effectively creating a "macroscopic quilt" of geologic and biological data in selected 10 by 10 centimeter panels. After the rover departed a region, the ground truth science team collected samples the rover had examined. "Based on the r...

Biodiversity hotspots identify conservation priorities

...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. The new analysis shows that an estimated 50 ...

50-year-old Mystery Solved: Protein Tags Regulate Key Ion Channel

...only in the nucleus -- also occurs near the cell's surface where it regulates at least one and possibly many ...ylation controls one important process at the cell surface and hints that it may influence others." Additional authors include co-first authors Sindhu Rajan a...

New component of the 'brakes' on nerve regeneration found

...chers knew that CNS neurons had receptors on their surface that accepted the inhibitory molecules--like a key fitting a lock--and switched-on inhibitory signaling within the neuron. They had also shown that a protein called p75 could function as a component of the complex of proteins that make up this recept...

New lab technique identifies high levels of pathogens in therapy pool

...ogenic, were enriched just inches above the pool's surface by as much as 60 percent. The microbes included "...ide hydrogen peroxide bubbles produced at the pool surface and were dispersed as the bubbles became airborne and burst. The hydrogen peroxide also eliminated m...

Survey finds silver contamination in North Pacific waters

...1.2 parts per trillion in samples of North Pacific surface waters taken during the cruise. This is about 50 times higher than baseline levels of silver in uncontaminated waters sampled by UCSC researchers on a previous cruise in the Atlantic Ocean. Because the natural background level is so low, scientists m...

Revolutionary nanotechnology illuminates brain cells at work

... fluorescent proteins, we placed the sensor on the surface of rat hippocampal cells. The hippocampus is the part of the brain that is involved with emotional reactions, and it helps store learned information in memory. When neurons are activated, they secrete glutamate, and we could see this activity under t...

NASA study finds snow melt causes large ocean plant blooms

...and and ocean during summer. As a consequence, sea surface winds over the Arabian Sea have strengthened leading to more intense upwelling and more widespread blooms of phytoplankton along the coasts of Somalia, Yemen and Oman. According to Goes, while large blooms of phytoplankton can enhance fisheries, exc...

Genetically Modified Natural Killer Immune Cells Attack, Kill Leukemia Cells

...fied the growing NK cells so they carried on their surface an artificial receptor that made them particularly...gnize a protein called CD19, which is found on the surface of leukemic cells. When the receptor bound to CD19 on leukemic cells, it set off a reaction that sup...

Nano-bumps could help repair clogged blood vessels

...es attach better to materials that possess smaller surface bumps than are found on conventional materials use...he researchers tested discs of titanium containing surface bumps about as wide as 100 nanometers ?or billionths of a meter. The metals used to make conventiona...

Study reveals new technique for fingerprinting environmental samples

...ht is a major energy source for microbes living in surface water there was an abundance of genes involved in photosynthesis in samples collected from shallow water. These differences in the abundances of genes involved in particular functions provide DNA clues to features of the environments from where the s...

NIH Researchers Discover How Insulin Allows Entry of Glucose Into Cells

...neath, illuminating the area just below the cell’s surface while leaving the inside of the cell dark. “When we started the experiment, we thought that the vesicles would be stationary,?Dr. Zimmerberg said. “The vesicles looked like comets streaking by.?/p> Dr. Zimmerberg added that studying the chemical...

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(Date:7/23/2008)...AS July 24, 2008 One of the reasons people on lo...reduce their intake of fructose, a type of sugar t...o a researcher at UT Southwestern Medical Center. ...clinical nutrition and lead author of a study appe...ion , said her team,s findings suggest that the ri...
(Date:7/23/2008)...rld summit" will bring together internationally re... U.S., Russia, China, Japan, Australia and India ...27 to Aug. 2. , "We are bringing together the...ife," said summit organizer J. William Schopf, fou...ics and Planetary Physics, Center for the Study of...
(Date:7/23/2008)...bara, Calif.) - In a study of free-living and para...ast of California and Baja California, a team of r...a Barbara, the United States Geological Survey, an...e biomass in those habitats exceeds that of top pr...ndings, which could have significant biomedical an...
(Date:7/23/2008)...y make the heart grow fonder, but endurance exerci...conducted at Washington University School of Medic...xercise training for about a year ended up with me...lso showed that by one metabolic measure, women be...now that the heart deteriorates as people get olde...
Breaking Biology News(10 mins):Limiting fructose may boost weight loss, UT Southwestern researcher reports 2Limiting fructose may boost weight loss, UT Southwestern researcher reports 3UCLA 'world summit' to explore ancient life on Earth, and beyond 2Study shows parasites outweigh predators 2Study shows parasites outweigh predators 3Exercise could be the heart's fountain of youth 2Exercise could be the heart's fountain of youth 3New technique improves purity of medicines 4493 1New technique improves purity of medicines 4493 2UPMC and UPMC Health Plan Recognized Nationally for Quality Leadership in Employee Health and Productivity 4488 1UPMC and UPMC Health Plan Recognized Nationally for Quality Leadership in Employee Health and Productivity 4488 2UPMC and UPMC Health Plan Recognized Nationally for Quality Leadership in Employee Health and Productivity 4488 3Genesis Technology Group Retains CCG Elite 4483 1Genesis Technology Group Retains CCG Elite 4483 2Genesis Technology Group Retains CCG Elite 4483 3IsoTis Adjourns Special Meeting to October 26 2007 1470 1IsoTis Adjourns Special Meeting to October 26 2007 1470 2IsoTis Adjourns Special Meeting to October 26 2007 1470 3IsoTis Adjourns Special Meeting to October 26 2007 1470 4
(Date:7/25/2008)...wswire/ -- Sagent Pharmaceuticals, Inc.,a private...nounced that it,has launched amiodarone HCl inject... the treatment and prophylaxis of frequently recur...unstable ventricular,tachycardia -- a potentially ...iodarone HCl injection will be available immediate...
(Date:7/25/2008)...gus can cause immune system changes , , ...ence linking gastroesophageal reflux disease (GERD...y Medical Center researchers. , An association ...1970s, and since then studies have shown that betw...lso experience GERD symptoms. But the actual link ...
(Date:7/25/2008)...ou are an Olympian, Professional Athlete, Elite Am...u Need to Know about Hydration to Boost Sports Per...r , Marina del Rey, Calif...tes are heading to Beijing following years of inte...pes of capturing an Olympic medal and securing the...
(Date:7/24/2008)...ers at Wake Forest University Baptist Medical Cent...that the hepatitis C virus slows or stunts the imm...atients are treated with a combination of drugs kn...ction is more serious in HIV-infected people, lead...s for Disease Control. Intravenous drug use is a m...
Breaking Medicine News(10 mins):Health News:Sagent Pharmaceuticals Launches Amiodarone HCl Injection, USP 2Health News:Sagent Pharmaceuticals Launches Amiodarone HCl Injection, USP 3Health News:People With GERD More Likely to Develop Asthma 2Health News:Hydration Will Be Key For Beijing Bound Olympians, What Every Athlete Must Know 2Health News:Hydration Will Be Key For Beijing Bound Olympians, What Every Athlete Must Know 3Health News:Hydration Will Be Key For Beijing Bound Olympians, What Every Athlete Must Know 4Health News:Hydration Will Be Key For Beijing Bound Olympians, What Every Athlete Must Know 5Health News:Researchers disprove long-standing belief about HIV treatment 2Health News:Researchers disprove long-standing belief about HIV treatment 3
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