Fig. 11.

Influence of 93.5 mM nitrate, in the presence and absence of Na⁺, upon the I-V relationships for rat NBCe1-A. Experiments similar to those shown in Fig. 9, A–D, except that 93.5 mM Cl⁻ was replaced with 93.5 mM NO₃⁻ and finally, in the continued presence of 93.5 mM NO₃⁻, 96 mM Na⁺ was replaced with 96 mM NMDG⁺. The composition of solutions used in this protocol is shown in Table 11. Horizontal bars, *P < 0.05.