Fig. 3. Time course of postprandial change in the concentration of (A) lactate, (B) chloride, (C) sodium and (D) potassium in Varanus exanthematicus with time 0 representing the fasted state and all other values postprandial. Values are mean ± 1 s.e.m. (N=6); asterisks mark mean values that are significantly different (P<0.05) from the fasting value. The dotted lines represent the standard error around the fasting values for comparison throughout the digestive period.