5,5'-dibromo-4,4'-dichloro-indigo is the product of X-gal cleavage, often used as a reporter with B-galactosidase. I've made the (unreferenced) observation that it seems as though the blue product slowly degrades over periods of time within the cell, allowing for cells to lose their blue coloration.
What mechanisms can explain the degradation of 5,5'-dibromo-4,4'-dichloro-indigo within cells?
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