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Fig. 4 Melanocytes descended from different mFSCs intermix. (A) Fluorescence image of labeled anal fin from a mosaic animal generated by injection of fTyrp>GFP transposon. Non-labeled melanocytes (white arrowhead) are present within the territory of the GFP+ melanocytes (green arrowhead). Broken lines show the border of the clone. (B) Fluorescence image of central stripe from a fish co-injected with fTyrp>GFP and fTyrp>mCherry transposons. All melanocytes in this area are labeled either with GFP (green) or mCherry (red). Arrowhead indicates what appears to be a melanocyte of both colors, but in fact is two overlapping red and green melanocytes at different focal depth in the fin. Scale bars: 0.2 mm.