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Latest Histology Stories

2011-01-10 14:50:28

A paper published online on January 10 in the Journal of Experimental Medicine reports that retinal ganglion cells"”neurons in the eye"”are rescued by immune cells that infiltrate the mouse retina after eye injury. A group led by Michal Schwartz at the Weizmann Institute detected immune cells called macrophages in the retinas of mice that sustained eye injuries a few days prior. Thanks to their expression of an anti-inflammatory protein, these macrophages dampened injury-induced...

2010-12-09 07:44:53

(Ivanhoe Newswire) -- Melanopsin, a light sensor that sets the circadian rhythm- the body's biological clock- also plays an important role in vision, according to this study.Melanopsin's messengers, called melanopsin-expressing retinal ganglion cells (mRGCs), forward information about the brightness of incoming light directly to visual centers in the brain.The results show a new role for mRGCs during image-forming vision, and suggest that these cells could make a significant contribution to...

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2010-12-08 10:26:17

Better known as the light sensor that sets the body's biological clock, melanopsin also plays an important role in vision: Via its messengers-so-called melanopsin-expressing retinal ganglion cells, or mRGCs-it forwards information about the brightness of incoming light directly to conventional visual centers in the brain, reports an international collaboration of scientists in this week's issue of PLoS Biology. The findings reveal a new role for mRGCs during image-forming vision and suggest...

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2010-12-03 09:46:03

Harvard scientists push SRS microscopy to new levels of spatial, temporal precisionA novel type of biomedical imaging, made possible by new advances in microscopy from scientists at Harvard University, is so fast and sensitive it can capture "video" of blood cells squeezing through capillaries.Researchers led by Harvard's Brian G. Saar, Christian W. Freudiger, and X. Sunney Xie describe the work this week in the journal Science.The new technique, based on stimulated Raman scattering (SRS),...

2010-11-10 18:01:10

The eye is not just a lens that takes pictures and converts them into electrical signals. As with all vertebrates, nerve cells in the human eye separate an image into different image channels once it has been projected onto the retina. This pre-sorted information is then transmitted to the brain as parallel image sequences. Scientists from the Max Planck Institute of Neurobiology in Martinsried have now discovered that fruit flies process optical information in a similar way. The evidence...

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2010-10-07 09:55:50

Salk researchers map functional connections between retinal neurons at single-cell resolution By comparing a clearly defined visual input with the electrical output of the retina, researchers at the Salk Institute for Biological Studies were able to trace for the first time the neuronal circuitry that connects individual photoreceptors with retinal ganglion cells, the neurons that carry visuals signals from the eye to the brain. Their measurements, published in the Oct. 7, 2010, issue of the...

2010-10-05 18:58:09

Physicists and neuroscientists from the University of Pennsylvania  have linked the cell structure of the retina to the light and dark contrasts of the natural world, demonstrating the likelihood that the neural pathways humans use for seeing are adapted to best capture the world around us. Researchers found that retinal ganglion cells that see darkness are more numerous and cluster closer together than those that see light, corresponding to the fact that the natural world contains more...

2010-09-22 04:59:00

BERGISCH GLADBACH, Germany, September 22, 2010 /PRNewswire/ -- Miltenyi Biotec announces the worldwide first and exclusive release of the Anti-GLAST (ACSA-1) MicroBead Kit. Isolation of viable GLAST-expressing astrocytes is now possible within one hour using the first commercially available antibody against an extracellular surface epitope of GLAST. Magnetic cell separation with MACS(R) Technology is the method of choice for the specific isolation of viable cells. A prerequisite for...

2010-09-20 15:41:19

We run our modern lives largely by the clock, from the alarms that startle us out of our slumbers and herald each new workday to the watches and clocks that remind us when it's time for meals, after-school pick-up and the like. In addition to those ubiquitous timekeepers, though, we have internal "clocks" that are part of our biological machinery and which help set our circadian rhythms, regulating everything from our sleep-wake cycles to our appetites and hormone levels. Light coming into...

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2010-03-26 06:51:23

Rice researcher extracts natural scaffold for tissue growth It frequently happens in science that what you throw away turns out to be most valuable. It happened to Deepak Nagrath, but not for long. The Rice assistant professor in chemical and biomolecular engineering was looking for ways to grow cells in a scaffold, and he discarded the sticky substance secreted by the cells. "I thought it was contamination, so I threw the plates away," said Nagrath, then a research associate at Harvard...


Word of the Day
mundungus
  • A stinking tobacco.
  • Offal; waste animal product; organic matter unfit for consumption.
This word comes from the Spanish 'mondongo,' tripe, entrails.