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The INFINITY Capture software system and saved as. AVI files. The number of contractions was manually counted and the number of beats per minute was calculated. The average heart rate and standard error were calculated and the results were analysed using one-way ANOVA. 2.11. Zebrafish Motility Analysis. 24 hpf dechorionated embryos were probed at the trunk of the body and yolk with fine forceps an