Fig. 4From: Early ketamine exposure results in cardiac enlargement and heart dysfunction in Xenopus embryosThe effect of ketamine on heart function. a Comparison of the heart rate (beats per minute) in the control and ketamine-treated embryos. n = 10. *P < 0.05. b Comparison of ventricular shortening fraction (VSF) in the control and ketamine-treated embryos. n = 6. *P < 0.05. The data are expressed as the means ± SDBack to article page