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Tag: "allows" at biology news

Heavy smoking cuts women's chance of pregnancy -- even with donated oocytes

... have received donated oocytes ?the situation that allows the most objective assessment of the role of the uterus in the outcome of IVF. The researchers studied all the first cycles of oocyte-donated IVF treatments carried out at the IVI-Valencia Foundation between the start of 2002 and June 2005 ?741 i...

Fantastic Voyage: A new nanoscale view of the biological world

...of biology and biomedical research. "This method allows us to see what has never been seen before, and to measure what has never before been measured," Lechene says. "Imagine looking into a building, slice by slice. You can see not only that it contains apartments, but also that each apartment contains a ...

A buffet for early human relatives

... for a very long time. It is this variability that allows modern humans to utilize foods from all over the world." The researchers used a laser to remove tiny samples from four 1.8-million-year-old fossilized Paranthropus teeth, then tested the samples to determine the ratios of two isotopes or forms of...

Brown scientists map structure of DNA-doctoring protein complex

...of "-integrase ("-Int), the protein "surgeon" that allows mobile DNA to cut into a chromosome, insert its own genes, and then sew the chromosome back up. That work was conducted using the lambda virus, which infects Escherichia coli (E. coli) bacteria and serves as a model that scientists use to understand ...

Selecting life: Scientists find new way to search for origin of life

...s and topmost mineral layer. The mass spectrometer allows the researchers to determine what's there. "ToF-SIMS will also allow us to detect the organic molecules that bind most strongly to mineral surfaces," commented Hazen. "In many ways, Hazen's approach cuts to the chase of addressing this problem," ...

Hopkins scientists link immune response to 'ghost' parasites and severely congested sinuses

...cientists at Johns Hopkins have linked a gene that allows for the chemical breakdown of the tough, protective casing that houses insects and worms to the severe congestion and polyp formation typical of chronic sinusitis. A team of Hopkins sinus experts has found that the gene for the enzyme, acidic mam...

Train your brain to hear your friends at a party

...y what part of the brain is responsible and how it allows us to distinguish one sound from lots of noise. Early research has had some remarkable results. Most mammals also have this ability and in 2006, scientists working in the Oxford Auditory Neuroscience Group found that spatial hearing in ferrets has...

One signal elicits thousands of answers

...nd analysed via mass spectrometry. This technology allows the precise identification of structure and composition of unknown compounds, here the cellular proteins. In total, 6,600 specific phosphorylation sites in 2,244 proteins were detected. "Comparing our results with the listings in existing databases s...

Fast-freeze snapshot yields new picture of nerve-muscle junction

.... Previously, Richmond developed a technique that allows a more precise understanding of how synaptic prote... the technique at UIC. "It's a new technique that allows us to take a snapshot of what's going on at the neuromuscular junction and actually physically view ...

Carnegie Mellon scientists use 'green' approach to transform plastics manufacturing

...yjaszewski, ATRP is a broadly adopted process that allows the production of specialty polymers for coatings,...ing to the authors. The new ATRP technique also allows for production of higher molecular weight chains, thereby extending the range of accessible material...

Nanoscale microscope sheds first light on gene repair

... sample preparation requirements. Light microscopy allows easier sample prep and observations of living cell...he genetic material in the nucleus. 4Pi microscopy allows researchers to actually see the response in three dimensions, at resolutions down to 100 nm. Therefo...

Artificial cornea offers better results for infants, some blind patients

...The device is made of a newer type of plastic that allows nutrients to enter the eye more quickly than previous designs. The latest procedure also includes a large contact lens placed over the cornea to help protect it from inflammation and scarring. After the procedure patients use antibiotic eye drops eac...

Proteins may behave differently in natural environments

...sfolded protein molecules fold into the shape that allows them to achieve their purpose in the cells. Misfol...ve and other diseases. Electron cryomicroscopy allows scientists to take very detailed two-dimensional images of individual molecules in a native-like env...

Seals protect brain, conserve oxygen by turning off shivering response on icy dives

...n chilly water, a finding that researchers believe allows the diving seal to conserve oxygen and minimize br... By shutting down the shivering response, a seal allows its body temperature to drop and achieves the benefits of hypothermia: a slower metabolism and lower...

Regulating the nuclear architecture of the cell

...n; or a mutation that disables RNA interference -- allows the heterochromatin to open up. The decondensed, repeated DNAs are then free to interact; DNA recombination and repair processes excise the DNA from the chromosome to form extrachromosomal DNA. If these extrachromosomal loops consist of ribosomal DNA...

Some butterflies travel farther, reproduce faster

...among female Glanville fritillary butterflies that allows some to move away from their birth place and establish new colonies. These venturesome butterflies are stronger fliers and reproduce more quickly compared to their less mobile female relatives. The study is a window to how genetic differences influe...

Developing uses for sugar-cane bagasse: Biotechnology applied to the paper industry

... cycle, after washing and pressing of the bagasse, allows additional quantities of the substrate to be processed and, in this way, raise the profitability of the operation. Furthermore, this process can be adapted to the processing of other raw materials (wood, cereals). Investigation of the use of methanol...

Motorola researchers develop selective sensors based on carbon nanotubes

...ino acids, so changing the sequence of amino acids allows the researchers to "tune the peptides and recognize different compounds," Tao said. "We developed a simple way to attach different peptides to different nanotubes." Erica Forzani, an ASU assistant research professor in electrical engineering, said...

Does missing gene point to nocturnal existence for early mammals?

...differ but having different cone genes or 'opsins' allows vertebrates to detect different wavelengths of light and allows them to see colour. The Manchester team now hopes to find out whether the two melanopsin genes in...

Chemical tests of cell growth enter third dimension

... because it tests several sets of cells at once -- allows for the simultaneous testing of different dosages,... His fibrous-bed bioreactor (FBB) is a device that allows cells to grow in natural 3D bundles. In the body, cells cling to supportive tissues as they grow; in...

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