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. 2007 Aug;130(2):203–215. doi: 10.1085/jgp.200709809

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Copyright © 2007, The Rockefeller University Press

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Figure 2. — Transport activity of SNAT3 expressed in Xenopus oocytes is dependent on substrate concentration, but is not affected by injected carbonic anhydrase II (CAII). (A) The rate of [H⁺]_i decrease induced by glutamine in SNAT3-expressing oocytes and (B) the rate of uptake of radiolabeled L-¹⁴C-glutamine into SNAT3-expressing oocytes, both indicative for the transport activity of SNAT3, were dependent on the glutamine concentration and the buffer used (HEPES and CO₂/HCO₃ ⁻), but were independent of whether the oocytes had been injected with CAII or H₂O. Figures in or between the bars in Fig. 2 give the number of experiments n.