magnetic 2 8

Tag: "magnetic" at biology news

Purdue researchers use enzyme to clip 'DNA wires'

Researchers at Purdue University have attached magnetic "nanoparticles" to DNA and then cut these "DNA wir...electronic devices. When placed in a solution with magnetic particles that have a positive charge, the particles are automatically attracted to the DNA strands,...

Brain May Be Less Plastic Than Hoped

...stitute for Biological Cybernetics used functional magnetic resonance imaging (fMRI) to monitor cortical activity for seven and one-half months after injury to the retina of adult monkeys. They found limited reorganization in the primary visual cortex. Their results contradict previous thinking. In a “News a...

Migratory songbirds have a specialized night-vision brain area

...e by the stars, and to visually detect the earth's magnetic field through photoreceptor molecules, whose light... fly, as well as navigate by stars and the earth's magnetic field. Surprisingly, Jarvis said, recent scientific evidence has suggested that birds have specializ...

Biochemists report discovery of structure of major piece of telomerase; implications for cancer

...the structure with Theimer and Blois using nuclear magnetic resonance (NMR) spectroscopy. Mutations in the RNA are associated with the inherited diseases aplastic anemia and dyskeratosis congenita, which frequently are manifested by progressive bone-marrow failure. "When you look at the sequence on paper, i...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

...d love-related neurophysiological systems inside a magnetic resonance imaging machine. They detected quantifia... autism link Aron reported that, using functional magnetic resonance imaging (fMRI) and other measurements, he and his colleagues found support for their two m...

Nanoscale Diagnostic Sets Sights on Alzheimer's

...f the test. Ultimately, the gold-DNA particles and magnetic particles sandwich the biomarker targets. A magnet separates the sandwich complexes from the rest of the sample. The complexes are then heated to release the DNA bar codes, which are then measured by an extremely sensitive detector. Each DNA piece g...

PET/MRI scans may help unravel mechanisms of prenatal drug damage

...d positron emission tomography (PET) combined with magnetic resonance imaging (MRI) to track the uptake and di...he current study combined PET with high-resolution magnetic resonance imaging (MRI) to track cocaine pharmacokinetics down to the level of the placenta and indi...

Special Imaging Study Shows Failing Hearts Are 'Energy Starved'

Using magnetic resonance spectroscopy (MRS) for the first time to... Bottomley, Ph.D., lead researcher and director of magnetic resonance research at the Johns Hopkins Department of Radiology. “While scientists have long known t...

Carnegie Mellon scientists develop tool that uses MRI to visualize gene expression in living animals

...rategies," Ahrens said. Ahrens' new approach uses magnetic resonance imaging (MRI) to monitor gene expression...ons in water molecules after they are exposed to a magnetic field and radiofrequency pulses. These signals are then converted into an image. Ahrens' new MRI rep...

Breakthrough method in nanoparticle synthesis paves the way for new pharmaceutical and biomedical applications

...nanoparticles can be used to host quantum dots and magnetic nanoparticles for bioimaging and quantum device applications. ...

New insight into people who 'see' colors in letters and numbers

...nia San Diego, have found. What's more, functional magnetic resonance imaging (fMRI) of their brains reveals t...esthetic colors. In fMRI, harmless radio waves and magnetic fields are used to map regions of higher blood flow in the brain, which reflects higher activity in ...

New comparative toxicogenomics database

...). NMRcombines radio wave emissions and a powerful magnetic field todetermine the structure of proteins suspended in solutions, while CDmeasures differences in the absorption of different types of polarizedlight by molecules to determine their shape. It also can show how thatshape can change when the protein ...

Discovery of key protein's shape could lead to improved bacterial pneumonia vaccine

...). NMRcombines radio wave emissions and a powerful magnetic field todetermine the structure of proteins suspended in solutions, while CDmeasures differences in the absorption of different types of polarizedlight by molecules to determine their shape. It also can show how thatshape can change when the protein ...

New imaging method gives early indication if brain cancer therapy is effective, U-M study shows

... they call a functional diffusion map. They used a magnetic resonance imaging scan that tracks the diffusion, or movement, of water through the brain and mapped the changes in diffusion from the start of therapy to three weeks later. The tumor cells block the flow of water, so as those cells die, water diffus...

Spider Venom Could Yield Eco-Friendly Insecticides

...rsity of Connecticut Health Center. Using nuclear magnetic resonance (NMR) spectroscopy, King and his colleagues have determined the three-dimensional structures of specific neurotoxins from the funnel-web spider -- toxins that either paralyze insects or send their nervous systems into overdrive. King's NSF-...

Mouse brain tumors mimic those in human genetic disorder

...examine pictures of the patient's brain taken with magnetic resonanceimaging (MRI). To capture such brain images, physicians inject acontrast dye into a patient's bloodstream and look for accumulation ofdye around the tumor. Though dye accumulation may be a sign of tumorprogression, it is unclear whether that...

1 2 3 4 5 6 7 8