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Segment length is irregular in alf dty86 fins. (A) Bright-field image of an alf dty86 fin. Arrows point to joints. (B) Segment length in wild-type and alf dty86 fins. Segment length was measured along the V + 3 fin ray in each of 10 fins. Segment length gradually decreases along the proximal-distal axis in wild-type fins, but appears random in alf dty86 fins.
