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Dependence of the time to peak (TTP) of isometric contraction amplitude on the extent of stretching in isolated trabecular (left panel) and papillary muscle (right panel) preparations. The points with bars show mean values and standard errors of the mean. The differences are significant (p < 0.05) between the groups: ^ - Pb + Cd vs. Cont; ^^ - Pb vs. Cd; ## - Pb + Cd vs. Cd.
