Figure 3.

Fecal and urinary K⁺ and Na⁺ excretion in kcne1^−/− and wild-type mice challenged with various K⁺ diets. Twenty-four-hour urinary and fecal excretion were determined on animals fed high or low K⁺ diets for 2 weeks. (A) Compared with wild-type mice, kcne1^−/− mice lose K⁺ and Na⁺ in the feces for all K⁺ intakes. (B) Urinary K⁺ and Na⁺ excretion normalized to creatinine excretion are not different between kcne1^−/− and wild-type mice whatever the K⁺ intake.