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Accelerated GFP-GR exchange is associated with less transcription. (a) Examples of a condensed array and a decondensed array are shown with the corresponding RNA FISH signals. (b) FRAPs of condensed arrays were consistently faster. (c and d) RU486 (100 nM) and corticosterone (100 nM) also yielded faster FRAPs than dexamethasone. Scale bar, 1 μm.
