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All these components are available online from companies which produce an array of sizes and wattages for different situations. From house lights to factory lights, there are a whole range of different components suited to each purpose. Most of these sites will offer all kinds of information on what each component is capable of doing Cheap MLB Jerseys Online , if they are suited for more than one fitting at a time and so on. They even provide instructions on how to change them and if one can replace a different kind or not. Of course, it goes without saying that those who are unsure of what they are doing should leave it to a professional electrician to do this work since the consequences could be dire. However, that being said Cheap MLB Jerseys Wholesale , if the instructions are very clear, as they should be given that these are the people who produce them, then there should be no problem in changing them at all. Scientists Use Light to Control Heart Muscle Cells
Posted On : Aug-18-2011 | seen (67) times | Article Word Count : 384 |

Researchers have found a way to use light to control the electrical activity of heart muscle cells. The research raises the possibility of light-controlled pacemakers to treat heart rhythm problems. By now Cheap MLB Jerseys From China , you likely know what a pacemaker is. It's a small device that's placed in the chest or abdomen to help control abnormal heart rhythms. This device uses electrical pulses to prompt the heart to beat at a normal rate. Electronic cardiac pacemakers and defibrillators have become successful and accepted ways to treat arrhythmia. But these devices can experience some problems: metal leads can short; batteries can run out; and magnetic fields can cause interference. Now scientists think they have found a new way of controlling heart function.
This latest health breakthrough involves a new technique that stimulates heart muscle cells with low-energy light. This creates the possibility for a future light-controlled pacemaker.
In the new study, researchers built on knowledge discovered in previous research. Several years ago,
investigators determined that brain cells could be stimulated using light if they were genetically altered to produce a light-sensitive protein called "channelrhodopsin 2" (or ChR2). Fast forward to the recent study: scientists created cells expressing the ChR2 protein and coupled them with heart muscle cells from animals Cheap MLB Jerseys China , creating heart tissue stimulated by light. They found that light-triggered heart muscle contractions and electrical waves were indistinguishable from electrically triggered waves.
What makes this health news particularly important? Rather than directly modifying heart cells, the researchers coupled donor cells optimized for light responsiveness with the heart cells. The new technique uses much lower energy than in prior studies and doesn't require the use of viruses
or the introduction of genes from other organisms into heartcells. Instead, cells from a person's bone marrow or skin can be cultured and modified to r. Cheap Jerseys Cheap Jerseys Cheap MLB Jerseys China Cheap Jerseys From China Cheap NFL Jerseys China Cheap College Hockey Jerseys Cheap Nike NBA Jerseys Cheap Baseball Jerseys Cheap Replica Soccer Jerseys Cheap Baseball Jerseys