Mobilization of osmotically inactive Na+ by growth and by dietary salt restriction in rats - Schafflhuber, M; Volpi, N; Dahlmann, A; Hilgers, K F; Maccari, F; Dietsch, P; Wagner, H; Luft, F C; Eckardt, K U; Titze, J (Am J Physiol Renal Physiol, 2007)