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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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