Scientists uncover origin of Merkel cells

October 2nd, 2009 WASHINGTON - Natural killer (NK) cells, part of our immune system, kill cells infected with a given virus. Researchers have now found that the cells also help keep T-cells from over-responding.

July 27th, 2009 WASHINGTON - Nearly all animals can detect light, thanks to three types of retinal cells that allow us to see images or distinguish between night and day. Now researchers have discovered in fish yet another type of cell that can sense light and contribute to vision.

July 27th, 2009 WASHINGTON - Researchers at the Johns Hopkins School of Medicine, US, have discovered in fish yet another type of cell that can sense light and contribute to vision. The team of neuroscientists shows that retinal horizontal cells, which are nerve cells once thought only to talk to neighboring nerve cells and not even to the brain, are light sensitive themselves.

July 24th, 2009 WASHINGTON - Circulating cells in the blood have the ability to form bone at sites distant from the original skeleton, according to a new research. It is believed that bone-forming cells, derived from the body's connective tissue, are the only cells able to form the skeleton.

July 9th, 2009 LONDON - Scientists are calling for more tests to ensure that artificial sperm created by some British researchers are identical to their natural counterpart, saying that further proof may make them a valuable tool to understand male infertility. Karim Nayernia and his colleagues at the University of Newcastle recently treated male embryonic stem cells (ESCs) with a range of substances, which converted them first into germline stem cells, and finally into spermatogonial stem cells.

July 8th, 2009 LONDON - Taking a step closer towards the creation of artificial nerve cells, scientists have now found that neurotransmitters can be used to communicate between the nerve cells in the body. Just like cochlear implants and electrodes, current methods to stimulate nerve signals in the nervous system are based on electrical stimulation.

June 19th, 2009 WASHINGTON - An American study has confirmed that light touch-the sense that lets musicians find the right notes on a keyboard, a seamstress revel in the feel of cool silk, the artisan feel a curve in material and the blind read Braille-depends upon the activity of Merkel cells, which are found in the crescent-shaped clusters in the skin. "Human, primates and any animal that relies on hands for dexterity use their Merkel cells to feel texture and shape.

June 5th, 2009 Scientists find more dinosaur bones at Utah quarrySALT LAKE CITY — Scientists at one of Utah's major new dinosaur quarries have found 60 to 70 new bones this spring, including what appears to be a 20-foot-long neck bone discovered this week. The latest finds are fresh evidence that the site near Hanksville could be a large and important source of bones in the coming years.

May 30th, 2009 LONDON - Using lasers to make solar photovoltaic cells that produce electricity from sunshine makes these cells cheaper and better, researchers say. Arnold Gillner, microtechnology head at the Fraunhofer Institute for Laser Technology in Germany, said: "Lasers work quickly, precisely, and without contact.

May 27th, 2009 WASHINGTON - If you thought that Star Trek scanners that fix injuries with beams of light was just a piece of fiction, just be ready for this-scientists have developed a new optical technology that could lead to better artificial tissues and wounds that heal faster with less scarring. The new technology lines up living cells and controls their movements to effectively heal the wounds faster.

May 6th, 2009 WASHINGTON - Scientists have now shown that skin cells can be coaxed to behave like muscle cells and muscle cells like skin cells. The fickleness of the cells, and the relative ease with which they make the switch, provide a glimpse into the genetic reprogramming that must occur for a cell to become something it's not.

May 5th, 2009 WASHINGTON - Scientists are developing artificial cells with the ability to tap an energy source and use it for sustained mobility. A Japanese study described the first 'self-propelled' oil droplets (used as a model for research on artificial cells) that can run on a chemical 'fuel'.

May 1st, 2009 WASHINGTON - Spring season is often accompanied by allergies and increased problems for asthmatic people. Now, American scientists have identified a previously unknown cellular switch that turns allergies and asthma both on and off.

April 24th, 2009 WASHINGTON - Turning all ear-related theories on their head, scientists have found that the ion channels responsible for hearing aren't located where scientists reviously thought. Researchers at the Stanford University School of Medicine have claimed that the age-old model to explain how the inner ear translates vibrations in the air into sounds heard by the brain is wrong.

March 28th, 2009 WASHINGTON - Genes from fireflies and jellyfish are virtually shedding light on possible causes of infertility and auto-immune diseases in humans. Auto-immune diseases are those in which something goes wrong with your immune system and it attacks healthy cells and tissues and makes you sick.