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Contractile force generation in bioengineered skeletal muscle bundles. (A,B) Peak twitch (At) and tetanus (AT) amplitudes for the 6 studied hydrogel formulations. The nomenclature describing hydrogel formulations is the same as shown in figure 1. Bars from left to right are obtained from n=4, 7, 8, 7, 7, and 6 bundles per group. ‘*’, statistically significant between the indicated pairings, p<0.05.
