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Representative recoil trajectories and fits for central and peripheral SFs. Retraction kinetics for a single central SF (squares) and peripheral SF (circles) irradiated in U373 MG cells (solid symbols) and U87 MG cells (open symbols). The solid lines are fits to a Kelvin-Voigt model for viscoelastic retraction. See Fig. 5 for means and statistical analysis of multiple SFs.
