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Fluorescence Recovery After Photobleaching of YFP-ArgBP2 in a quail cardiomyocyte in tissue culture. The double arrows marked the same myofibril in the cell (a) prebleach, (b) post bleached, (c) one minute post bleached and (d) 10 minutes postbleached. The prebleached intensity is fully recovered by ten minutes indicating that YFP-ArgBP2 is a very dynamic protein in the Z-bands of mature myofibrils. Bar = 10 microns.
