FIG. 3.

Rate of morphological change varies at different positions in the dogbone. The change in gap length (upper left) and in width and fluorescence at different locations (denoted by numbers) in a representative loop-ended dogbone (connecting rod 9 mm long, 600 μm wide) were obtained from time lapse fluorescent images. Width measurements were taken from changes in the x, y dimensions of the fluorescent images and gap length was an average of both gaps. All measurements were normalized to their value at the initial time point.