1. The effects of changing PCO2 extracellular pH (pHo) and HCO3- on intracellular pH (pHi) were studied in isolated neonatal rat type-I carotid body cells using the pH-sensitive fluoroprobe, carboxy-SNARF-1. 2. Simulated respiratory acidosis and alkalosis (i.e. changes in PCO2 at constant HCO3-) led to rapid (half-time t0.5 = 3 s) monotonic changes in pHi. The relationship between pHi and pHo under these conditions was linear, steep (0.63 pHi/pHo) and remarkably similar to the response predic...Expand abstract
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Effects of extracellular pH, PCO2 and HCO3- on intracellular pH in isolated type-I cells of the neonatal rat carotid body.
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