Genetic Testing: Do We Really Want To Know Everything Our Genome Has To Say?

Genetic Testing: Do We Really Want To Know Everything Our Genome Has To Say? 

 

Once impenetrable, the individual genetic code is becoming an open book thanks to kits that scan for genes linked to scores of traits and diseases, from bladder cancer and baldness to male infertility and memory loss.

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Transplanted Stem Cells Undo Birth Defects

Transplanted Stem Cells Undo Birth Defects 

 Neural stem cells, tagged green with a fluorescent dye, have been transplanted among the brain cells (red) of a mouse born with brain damage after its mother was given heroin during pregnancy.

By injecting stem cells directly into the brain, scientists have successfully reversed neural birth defects in mice whose mothers were given heroin during pregnancy. Even though most of the transplanted cells did not survive, they induced the brain’s own cells to carry out extensive repairs.

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Researchers Regrow Cells OF The Inner Retina

Researchers Regrow Cells OF The Inner Retina 

Cells in the retina of mice can be coaxed to create new neurons following an injury, according to new research from the University of Washington. This is the most definitive demonstration to date that such regeneration is possible, given the right cues, for a specific type of neuron in the inner retina of a mammal.

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Improved Retinal Implant Stimulates Neurons To Restore Sight

Improved Retinal Implant Stimulates Neurons To Restore Sight 
A new retinal implant sits mostly outside the eye. 

For many blind or partially sighted people, implants that stimulate healthy nerve cells connected to their retinas could help restore some normal vision. Researchers have been working on such implants since the 1980s but with only limited success. A major hurdle is making an implant that can stay in the eye for years without declining in performance or causing inflammation.

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MicroRNA In Blood May Help Detect Cancer And Other Diseases

MicroRNA In Blood May Help Detect Cancer And Other Diseases 

 

Tiny pieces of RNA are turning out to play a big role in health. Over the past few years, scientists have found that these molecules, called microRNAs, are involved in key functions in cells and are linked to the development of certain cancers and other diseases. A new study led by scientists at Nanjing University, in China, finds that microRNAs circulating in blood can serve as a molecular “fingerprint” for cancers and diabetes. The findings raise the possibility that a simple blood test could help clinicians tailor treatments to individual patients.

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First Detailed Map Of The Human Brain

First Detailed Map Of The Human Brain

Scientists used a new type of brain imaging called diffusion spectrum imaging, along with mathematical analysis,
to build a map of the cortical architecture of the human brain, shown here.

The first high-resolution map of the human cortical network reveals that the brain has its own version of Grand Central Station, a central hub that is structurally connected to many other parts of the brain.

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