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Detection of the mitochondrial permeability transition event
provides an early indication of the initiation of cellular
apoptosis. This process is typically defined as a collapse
in the electrochemical gradient across the mitochondrial
membrane, as measured by the change in the membrane
potential (YD). Loss of mitochondrial YD is indicative of
apoptosis and can be detected by a unique fluorescent
cationic dye, 5,5',6,6'-tetrachloro-1,1',3,3'-tetraethyl-
benzamidazolocarbocyanin iodide, commonly known as JC-1.
This dye has been incorporated into the user-friendly kit
for the simple and reproducible detection of the membrane
potential (Y)D event in apoptotic cells. The kit has been
formatted for use on flow cytometers and fluorometric plate
readers.
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