There is light in your heart

A major breakthrough in research has been reported which will lead to improved monitoring of mitochondrial activity in manufacturing a chemical energy called adenosine triphosphate from food. The monitoring will help in the re-starting of the heart after surgery or heart attack.
The researchers made use of luciferase the chemical found in fireflies which lights them up.  Transferring modified forms of the luciferase into heart cells enables production of the chemical within the mitochondria and since luciferase lights up in the presence of ATP the amount of ATP could easily be measured by using microscopes. Such a measurement will help in stabilising the production of the ATP during the re-start of the heart. http://www.sciencedaily.com/releases/2006/09/060922095235.htm

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