Boxplots of the motor reflex score from the Infant Behavior Assessment Scale test measured at 30 days of age for infants exposed to isoflurane (ISO) 0 (control), 1 (ISO-1), or 3 (ISO-3) times. The middle line in the box represents the median, the box outline represents the interquartile range, and bars represent the range. *P < 0.05.