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New research sets stage for noninvasive monitoring of HIV-induced peripheral neuropathy

Corneal nerve fiber assessment has great potential as a tool to diagnose and monitor peripheral neuropathy induced by HIV, say scientists at Johns Hopkins University School of Medicine. The study found that SIV-infected macaque model showed decreased corneal nerve fiber density and correlated with epidermal nerve fiber length.

SourceElsevier Health Sciences·JournalAmerican Journal Of Pathology·DateMay 12, 2014

Seeing depth through a single lens

Researchers at Harvard University develop a method for creating 3D images from two stationary frames, enabling amateur photographers and microscopists to capture stereo-like effects. This technique uses light-field moment imaging to infer the angle of light at each pixel, allowing for the creation of brand-new images as if the camera h...

SourceHarvard University·JournalOptics Letters·DateAug 5, 2013

Nature: Watching molecule movements in live cells

Researchers developed a new microscopy method combining STED fluorescence microscopy with raster image correlation spectroscopy to track molecule movements in live cells. This allows for high-resolution analysis of biomolecular dynamics, enabling better understanding of cell membranes and protein interactions.

SourceHelmholtz Association·JournalNature Communications·DateJul 24, 2013

Addressing the need for microscopic speed

Researchers have developed a digital microscope that creates high-resolution images at fast speeds, enabling scientists to study biological processes like cell activity in greater detail. The new device uses a programmable micromirror system to reject unwanted light and improve image quality.

SourceUniversity of Leicester·JournalPLOS ONE·DateAug 24, 2012

Novel microscopy method offers sharper view of brain's neural network

A team of Italian researchers has developed a new microscopy technique called confocal light sheet microscopy (CLSM) that improves the resolution and contrast of images of the brain's neural pathways. CLSM enables scientists to obtain high-resolution views of tissue samples with a resolution of a few microns and faster acquisition time.

SourceOptica·JournalOptics Express·DateAug 23, 2012

Shearing triggers odd behavior in microscopic particles

A team of scientists has imaged and explained the formation of string structures in microscopic spheres suspended in a viscous fluid under shear forces. The study revealed that these strings were perpendicular to the shear force, contrary to expectations, and were influenced by lubrication forces.

SourceUniversity of Chicago·JournalProceedings of the National Academy of Sciences·DateDec 22, 2011

Generating form and function: Imaging development featured in Cold Spring Harbor Protocols

Two methods for culturing and imaging Caenorhabditis elegans embryos are described, enabling researchers to visualize dynamic form and function of molecules, cells, tissues, and whole embryos. Meanwhile, a method for isolating and culturing early mouse embryos is also presented, allowing time-lapse imaging of cell movements.

SourceCold Spring Harbor Laboratory·JournalCold Spring Harbor Protocols·DateNov 23, 2010

Emory physicist opens new window on glass puzzle

Researchers led by Eric Weeks found that glasses are solid-like because they can't move when the sample chamber is thinner than typical group size. The study uses particles rather than atoms to directly observe how confinement influences glass transition, providing a simple framework for understanding other questions about glass.

SourceEmory Health Sciences·JournalPhysical Review Letters·DateAug 9, 2007

New technology shows our ancestors ate…everything!

Researchers used new software to analyze fossilized tooth surfaces, revealing that early humans like Australopithecus africanus ate tougher leaves and Paranthropus robustus ate harder foods. The study also showed unexpected variability in the samples, suggesting both species relied on less preferred foods during periods of scarcity.

SourceJohns Hopkins Medicine·JournalNature·DateAug 5, 2005

Moving DNA Molecules With Magnetic Tweezers

Using magnetic tweezers, scientists can move DNA molecules in three dimensions, opening up possibilities for non-invasive surgical tools and targeted medicine delivery. The device works by using electromagnetic fields to manipulate iron oxide-coated beads attached to the DNA molecule, allowing precise control over movement.