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Figure 4 - figure supplement 1 - source data 1 Ca<sup>2+</sup> transients in <italic>ryr1b<sup>+/+</sup></italic> myocytes have higher peak amplitude and are more frequent than in <italic>ryr1b<sup>mn0348Gt</sup></italic><sup>/<italic>mn0348Gt</italic></sup> myocytes.

(A) Dot plot comparing peak ∆F/F0 responses (averaged within cell) between ryr1b+/+ and ryr1bmn0348Gt/mn0348Gt animals. (B) Dot plot representing the number of responses per cell (≥0.05 ∆F/F0) recorded during the 3 min imaging window in ryr1b+/+ and ryr1bmn0348Gt/mn0348Gt animals. Plots show median with interquartile range. nryr1b+/+ = 64 cells, nryr1bmn0348Gt/mn0348Gt = 48 cells. Data were compiled from four independent experiments containing at least two animals in each group. p-values determined using the Mann-Whitney U test. Effect size (Cohen’s d)=1.445 (A) and 0.931 (B). Source data can be found in Figure 4—figure supplement 1—source data 1.

Summary data analyzing the parameters of Ca<sup>2+</sup> transients in individual tested cells.

wt = ryr1b+/+, gbt348hom = ryr1bmn0348Gt/mn0348Gt, peak = peak ∆F/F0, and peaknum = number of transients/responses ≥ 0.05 ∆F/F0.

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