Figure 4: None

Representative traces of flavoprotein fluorescence recorded in (A) wt and (B) αMHC403/+ myocytes before and after exposure to 10 μmol/l BayK(-) or BayK(+). Arrow indicates addition of drugs. (C) Mean ± SEM of flavoprotein fluorescence for all myocytes exposed to BayK(+), BayK(-), 15 μmol/l nisoldipine (Nisol), or 50 μmol/l FCCP as indicated. (D) Ratio of increase in flavoprotein fluorescence after addition of BayK(-). The Kruskal-Wallis test was used for all comparisons. Abbreviations as in Figures 1 and 2.

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