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  • Title: Rapid method for measuring intracellular pH in vivo.
    Author: Calderwood SK, Dickson JA.
    Journal: Cell Biol Int Rep; 1978 Jul; 2(4):327-37. PubMed ID: 33769.
    Abstract:
    Intracellular pH (pHi) was simultaneously measured in 6 normal tissues and a malignant tumour of rats by a rapid triple isotope technique, based on the in vivo distribution of 5,5-dimethyl-2,4-oxazolidinedione-2-14C (DMO), tritiated water and sodium chloride-36. Results compared favourably with pH measured directly in the same rat by capillary glass electrode, and with values of other workers for pHi in rat tissues. Mean pHi of normal tissues was close to pH 7, and in each organ there was a linear relationship between pHi and extracellular pH (pHe) over the normal range of pHe encountered (pH 6.9-7.6). Organ pHi altered in response to administration of NH4Cl or NaHCO3 to the host.
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