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Visualization of the location of β1-adrenoceptor-GFP following long-term challenge with isoprenaline. Cells stably expressing the FLAGTM β1-adrenoceptor-GFP construct were either untreated (A) exposed to isoprenaline (10 μM) for 24 h (B) The distribution of the construct was then visualized. Two further experiments produced similar patterns.
