Cell volume loss with subsequent volume recovery in response to increased NaCl or sucrose.

<p>Time course of volume changes in single fibres where extracellular osmolarity was raised 49/L by addition of NaCl (•, n = 6 fibres from 4 muscles from 2 mice) or sucrose (▪, n = 8 fibres from 4 muscles from 2 mice), or by raising osmolarity by 94 mosmol/L using sucrose (▾ n = 11 fibres from 6 muscles from 3 mice). * The initial rate of volume loss and RVI were greater when NaCl was used to raise osmolarity compared to sucrose.