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  • Title: Uptake of K+ by frog gastric mucosa from submucosal side and acid secretory rate.
    Author: Takeguchi N, Horikoshi I, Hattori M.
    Journal: Am J Physiol; 1977 Mar; 232(3):E294-7. PubMed ID: 14512.
    Abstract:
    The K+ content in frog gastric mucosa (K+) was measured as a function of the submucosal K+ concentration ([K+sm]) in the absence of K+ on the mucosal side. The (K+) in HCO3- buffer with 95% O2-5% CO2 gas showed that the removal of external K+ induced a 27% K+ loss from the control value of 5 mM K+sm, that there was no linear relation between (K+) and [K+sm, and that the change in the (K+) versus the [K+sm] was hyperbolic, indicating that there are two different types of K+ in the mucosa: bound and free K+.
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