Fig. 4. The influence of 10-4 mol l-1 acetazolamide added to
the perfusion saline at 0 h on PCO2 levels in
arterial perfusate inflow, venous perfusate outflow, and secretion fluid.
Asterisks indicate means significantly different (P<0.05) from the
respective control value at `C' before acetazolamide addition. Values are
means ± 1 s.e.m. (N=6).