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Fig. 5. The effects of injecting bovine carbonic anhydrase (CA; N=9) on (A) O2 uptake (O2) and (B) CO2 excretion (CO2) in P. dolloi. Aerial gas transfer is depicted by the filled portions of each bar and aquatic gas transfer by the unfilled portions. (C) Representative recordings of aerial CO2 transfer (grey line) and aquatic CO2 transfer (black line) from a single fish. Note that in this particular experiment, only the air chamber was flushed after the control period of respirometry. A statistical difference from the control group is denoted by an asterisk (P<0.05).