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Tag: "observed" at biology news

Quantum Dots Research Leads to New Knowledge about Protein Binding in Plants

...localization revealed informationthat could not be observed previously by conventional imagingtechniques. This study provides a new tool to botanical scientists bymerging areas of materials science, chemistry and plant biology.The findings are the result of an interdisciplinary research teamincluding Sathyaji...

Neuronal 'traffic jam' marks early Alzheimer's disease

... samples from people with the disease, researchers observed a characteristic breakdown in neurons that appears...studies with fruit flies, Goldstein and others had observed that overexpression of the gene for a key protein that underlies Alzheimer's pathology, called beta ...

Anti-bacterial additive widespread in U.S. waterways

...eChemistry department at Johns Hopkins University, observed theoccurrence of triclocarban in the environment correlated strongly withthat of triclosan, another commonly used antimicrobial chemical thathas been studied in much greater detail because it is more easilydetectable.Using an empirical model and publ...

Researchers Uncover Key Step In Manufacture of Memory Protein

... During their research, Dr. Loh and her colleagues observed mice genetically incapable of producing CPE. In these mice, proBDNF could not be delivered into the lipid raft-rich vesicles for conversion to mBDNF. Instead, it appeared to leak out of the golgi apparatus, where it leached through the cell membrane ...

Plants respond similarly to signals from friends, enemies

...tany and co-author of the paper. Weerasinghe first observed the changes in the plants triggered by signals from rhizobia, called Nod factors, and then saw the similar changes occurring when plants were signaled by root-knot nematodes. In the paper, the researchers call the nematodes' signals "Nematode factors...

The secret to longevity in tubeworms

...luxes in the water near the vents do not match the observed tubeworm colony size and individual longevity, leading Cordes et al. to propose that L. luymesi also uses its roots to release sulfate back to the microbial consortia from which it draws its sulfide. Without this return of sulfate, the model predicts...

Transplantation Of Monkey Embryonic Stem Cells Reverses Parkinson Disease In Primates

...have a protective effect on DAneurons. The authors observed increased DA neuron development andsubsequently transplanted these neurons into monkeys treated with anagent called MPTP, which is considered a primate model for Parkinsondisease. These transplanted cells were able to function as DA neuronsand dimini...

U of M researcher examines newly emerging deadly disease

...lin therapy may be indicated. Of the five patients observed in the Minneapolis-St. Paul area during the period of 2000-2004, four of the patients were previously healthy and four of the patients were women. Schlievert and colleagues hypothesize that the clinical features of purpura fulminans and toxic shock s...

The secret lives of whales

...to the sulfur loving clams, mussels and tube worms observed around hydrothermal vents. Smith immediately suspe...n illuminate the entire basin,?he says. Clark has observed that the distribution of singers is closely matched to the distribution of zooplankton, and suspects...

Scientists decipher genome of fungus that can cause life-threatening infections

...ich may account for the genome rearrangementsoften observed between different Cryptococcus isolates.TIGR's Fraser says the Cryptococcus genome sequence will benefit a widerange of biomedical research into the increasingly significant humanpathogen. Stanford's Hyman says, "The two new Cryoptococcus genomeseque...

New research questions basic tenet of neuron function

...beled synaptic vesicles with a fluorescent dye and observed how and when the vesicles released neurotransmitters, both when the neurons were at rest and when they were active. From these observations, as well as data gathered from electrophysiological techniques, the researchers found two distinct types of ve...

Study: Soap And Water Work Best In Ridding Hands Of Disease Viruses

...represented the average length of time researchers observed busy health-care personnel washing or otherwise disinfecting their hands at work. "Previous studies have had people clean their hands for 30 seconds or so, but that’s not what health-care workers usually do in practice, and we wanted to test the pro...

Open microfluidic and nanofluidic systems

...hannel corners. Examples for these morphologies as observed by atomic (or scanning) force microscopy (AFM) are...ction of the new theory is that the experimentally observed polymorphism of the wetting liquid depends only on two parameters: (i) the channel geometry, i.e., t...

Scientists identify new model Of NK cell development

...red to as CD56 bright and CD56 dim cells) and they observed that the bright subset appeared much more frequently in lymph nodes than in bone marrow or circulating blood. In other words, they had a hunch traditional thinking about the origin of human NK cells might be wrong. In building a case to support the...

White blood cell waste disposal system plays critical regulatory role

...d IL-23 production by phagocytes. The researchers observed that the amount of IL-23 produced by phagocytes was reduced when phagocytes actively ingested apoptotic neutrophils. Interestingly, mice with abnormal neutrophils that lacked the ability to migrate into body tissues where they would have encountered ...

Falling ants glide back to trunk to avoid dangers of forest floor

...ts known to actively direct their fall ?were first observed last year outside Iquitos, Peru, by insect ecologist Stephen P. Yanoviak of UTMB. While perched 100 feet up in the rainforest canopy waiting for mosquitoes to alight and feed on his blood, Yanoviak casually brushed off a few dozen ants that were atta...

World's largest rainforest drying experiment completes first phase

...before a second harvest will increase. Third, the observed sensitivity of large canopy trees in the forest to drought is greater than expected. Once the moisture that is stored in deep soil is depleted, then the large trees that tower 130 to 150 feet above the ground, basking in full sunlight, begin to falte...

Sequencing of marine bacterium will help study of cell communication

...e National Academy of Sciences (PNAS), have so far observed both differences and similarities in gene arrangement between it and pathogenic Vibrio species. V. fischeri has a lower GC content than other sequenced Vibrio species, but it is still more closely related to them than other organisms. (Among the four...

Kinovate Life Sciences Launches Nittophase?High Performance Solid Support For Oligonucleatide Synthesis

...ested at both small and large scales, and has been observed to exhibit superior characteristics and performance when compared to other solid supports currently on the market. NittoPhase?has great potential to decrease manufacturing costs due to it’s significantly lower unit cost, as well as potentially higher...

Pathogen-Mimicking Vaccine As Strategy For Cancer Therapy

...nses were one order of magnitude higher than those observed in eight patients who received the Melan-A/MART-1 antigen with IFA but without CpG 7909 in previous studies. According to Dr. Jill O'Donnell-Tormey, the Executive Director of CRI, the trial is part of the CVC's systematic, coordinated vaccine develo...

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