Contractile properties of fast muscle preparations regenerating in slow muscle beds

Summary Mechanical evidence is presented to show that fast muscle tissue regenerating in the bed of a slow muscle, and innervated by the slow muscle nerve, has contractile properties identical to those of a slow muscle regenerating in its own bed. The results do not support the idea that regenerating fast muscles are partially resistant to the transforming effects of a slow nerve.This investigation was supported in part by NIH grants 1-RO1-NS-14033 and 1-T32-07224.