Fig 2. Normal renal electrolyte handling in P2x6^-/- mice.

a) Serum Mg²⁺ concentrations of wild-type, heterozygous and knockout P2x6 mice. b) 24 hrs urinary Mg²⁺ excretion of wild-type, heterozygous and knockout P2x6 mice. c) Serum Ca²⁺ concentrations. d) 24 hrs urinary Ca²⁺ excretion. e) Serum Na⁺ concentrations. f) 24 hrs urinary Na⁺ excretion. g) Serum K⁺ concentrations. h) 24 hrs urinary K⁺ excretion. Values (n = 10) are presented as means ± SEM.