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Persistence of F-actin arrays in the absence of Shot function. Flat dissected embryos (arrows, bottom left, indicate anterior) with tendon–cell-specific expression of actin-GFP (green); muscles are labeled with phalloidin (magenta); different genotypes (indicated on left) were treated for 90 min in either PBS (left column) or PBS with toxin (right column; LaA, 6 μM latrunculin A; CyD, 4 μM cytochalasin D). Arrowheads indicate elongated F-actin arrays. Bar, 19 μm.
