Fig. 5

a Evolution of pH (measured by arterial gasometry) and electric potential (mV) (measured by pH electrochemical sensors) in the in vivo model during ventilatory hypoxia induction. b Pre- and post-calibration of the sensors in PBS buffer with pH values of 4.006 and 7.413. Data are expressed as mean ± SEM. N = 6 animals, 7 electrochemical sensors tested in vivo and 2 electrochemical sensors for post-calibration analyses