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Representative traces of the force-pCa relationship from chemically skinned bundles of fetal cardiomyocytes from the left ventricles of control (▲) and rosiglitazone-treated (●) animals. The pCa and Hill coefficients for control fetuses were 6.19 and 1.80, respectively, and for rosiglitazone-treated fetuses, they were 6.24 and 1.31, respectively.
