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Tag: "formed" at biology news

Engineer ramps up protein production, develops versatile viral spheres

...ring virus that infects E. coli bacteria. They are formed when 180 copies of the same protein assemble into a nanoscale soccer ball. "We think these little spheres, 27 nanometers in diameter, will form the basis for a new class of pharmaceuticals and a new class of materials," Swartz says. "For example, t...

A key antibody, IgG, links cells' capture and disposal of germs

... scientists found that latex beads coated with IgG formed phagolysosomes in just a third the time it took the cellular machinery to process uncoated beads, 15 minutes versus 45 minutes. "This process is central to the human immune response," Nohturfft says. "But some of the most destructive microbial pat...

Virus may control Australia's

...Australia. Supported with $355,000 from the newly formed Invasive Animals Cooperative Research Centre and the Murray-Darling Basin Commission, the two-year project will investigate the effectiveness of Koi herpesvirus in controlling strains of carp present in Australia and will examine whether the virus wi...

Neural networking nanotubes

...dical devices, sensors, and prosthetics. SWNTs are formed from carbon atoms by various techniques including deposition and resemble a rolled up sheet of chicken wire, but on a tiny scale. They are usually just a few nanometers across and up to several micrometers in length. The researchers built up laye...

A new approach to growing heart muscle

.... The measurement showed that the BEHM that had formed in just four days after a million cells were layered on fibrin gel could contract with an active force of more than 800 micro-Newtons. That's still only about half the force generated within the tissue of an actual beating heart, but it's much higher...

Tracing the formation of long-term memory

...called "functional imaging" to see when the memory formed in the fly’s brain. "Before training, we could see some calcium flowing into the mushroom body neurons when the flies were exposed to odor," said Davis. When they exposed the fruit flies or Drosophila to the odor 24 hours after spaced training, t...

A buffet for early human relatives

...ing. Each laser sampling vaporized enamel that formed during several months and thus represented what Paranthropus ate during that period. By taking several samples off the length of each tooth, the researchers reconstructed a few years of each creature's diet. When the laser is used, the vaporized ...

Comments, experts and background on the 2006 Nobel Prize in chemistry

...stallography, a technique that records the pattern formed as x-rays bend and spread while passing through atoms in a substance. Those images look like bundles of twisted wire. However, they provided scientists with an understanding of how transcription works on a molecular level. ...

Edible coatings will be the packaging of the future

...h was opened as it has been shown that the coating formed a second skin on the breast and onto which various additives, such as antimicrobians, can be added Despite the fact that the coatings did not manage to reduce microbian evolution, it has been shown that the WPI forms a film on chicken breasts which...

Transplanted brain cells hold promise for Parkinson's disease

...both survived. Also, transplanted neural cells had formed synapses to communicate with each other and ultimately the striatum, the portion of the brain dopaminergic cells act on to control movement. "When we looked at the transplanted stem cells, they had survived, had differentiated into neurons and sho...

Discovery in the evolution of the immune system absorbing cells

...ry Medicine at the University of Pennsylvania, and formed by researchers from Philadelphia, St Louis and Idaho (USA) and by Dr Lluís Tort of the Universitat Autònoma de Barcelona, the group has been able to show that B cells in fish as well as in amphibians are capable of strong phagocytosis both in in vivo...

Record ozone loss during 2006 over South Pole

...ess of this season, polar stratospheric clouds are formed that contain chlorine. As the polar spring arrives, the combination of returning sunlight and the presence of polar stratospheric clouds leads to splitting of chlorine compounds into highly ozone-reactive radicals that break ozone down into indivi...

Molecular motors and brakes work together in cells

...o their correct structure. If microtubules are not formed properly such basic functions as cell division and...rakes." If microtubule-based structures are not formed properly because of failures in brakes or motors, such basic functions as cell division and cell tra...

Cancer cells forming blood vessels send their copper to the edge

...ons of breast tumor tissue that were rich in newly formed blood vessels. "Once again," said Finney, "we found that in contrast to both non-vascularized areas and areas of mature blood vessels, in areas of tissue where blood vessels were newly invading surrounding tissue, the cells showed copper localized at...

Protein averts cell suicide but might contribute to cancer

... run the length of a DNA helix. A complete step is formed by pairs of bases according to a rule: ‘A' always pairs with ‘T,' and ‘C' always pairs with ‘G.' When cells make new DNA, the two strands separate, and each old half becomes a template for a new partner. The DNA-making machinery travels along the...

'Exercise pill' switches on gene that tells cells to burn fat

...fers no help to an adult whose muscles are already formed and who now would benefit greatly from having more active, fat-burning muscles. That is why the potential of chemical metabolic engineering - possibly a one-a-day pill as opposed to permanent genetic metabolic engineering - is so exciting, says ...

Brain tissue reveals possible genetic trigger for schizophrenia

...betes ?we find not mutated proteins, but correctly formed proteins in incorrect amounts," said study lead author and UNC professor of psychiatry Dr. Diana Perkins. The research appears this week in the online edition of the journal Genome Biology. "To our knowledge this study is the first to associate al...

Widely used iron nanoparticles exhibit toxic effects on neuronal cells

...resence of iron oxide nanoparticles were less well formed and also showed abnormal morphology and neurobiological characteristics. The researchers also studied long protein polymers inside the PC12 cells that make up the cytoskeletal structure. They found that iron oxide nanoparticles resulted in fewer a...

New science of metagenomics 'will transform modern microbiology'

...Microbe Project, an interagency committee that was formed in 2000 to advance "genome-enabled microbial science." Noting that the data generated by the Human Genome Project were quickly made available in a public database, making them more valuable to researchers, the committee urged that metagenomic data...

Cancer scientists create 'human' leukemia process to map how disease begins, progresses

...rnest McCulloch and James Till -- a discovery that formed the basis of all current stem cell research. Dr. Dick, who holds the Canada Research Chair in Stem Cell Biology and is also Senior Scientist at the Toronto General Research Institute and at the McEwen Centre for Regenerative Medicine, University Heal...

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