Fig. 6
From: Regulation of myocardial contraction as revealed by intracellular Ca2+ measurements using aequorin
Modified from Fig. 6 of [46] with permission.
Effects of isoprenaline on CaT and tension during twitch. Left panel (A–D) shows dose-dependent changes in CaT (top) and tension (bottom). Ferret ventricular papillary muscles were used. Iso, isoprenaline. A, control (without Iso); B, 0.2 µM Iso; C, 0.5 µM Iso; D 1.0 µM Iso. Arrows indicate the stimulation point. Right panel indicates the normalized and superimposed CaT (top) and tension (bottom) with and without 0.2 µM Iso. Left and right panels were obtained from the same preparation.