Fig. 1. The effect of cannulation surgery and repeated blood sampling on plasma
lactate and blood pH in Rana catesbeiana. (A) Blood pH and (C) plasma
lactate levels following a typical (>2 h) cannulation surgery. Differing
letters indicate significant differences between treatments
(P<0.05, N=4). (B,D) The effect of repeated blood
sampling on blood pH (B) and plasma lactate (D; P>0.05,
N=4). Values are means ± s.e.m.