Effect of changing osmolality on intracellular pH and Ca2+ and Na+ levels
| [Ca2+]i (nmol l–1) | pHi | [Na+]i (mmol l–1) | |
|---|---|---|---|
| SLS | 77±9 (207) | 7.3±0.2 (49) | 7±3 (54) |
| +85 mmol l–1 NaCl | 3±8 (53) | –0.08±0.11 (25) | 5±3 (14) |
| –59 mmol l–1 NaCl | 14±18 (58) | –0.02±0.09 (6) | –1±1 (13) |
[Ca2+]i, pHi and [Na+]i under isotonic conditions (standard leech saline, SLS) and the change in these after increasing or reducing the extracellular osmolality (+85 mmol l–1 NaCl, –59 mmol l–1 NaCl). Data are means ± s.d.; number of experiments is given in parentheses