Ionic composition of the test solutions (in mM)
| Na+ | K+ | Cs+ | NMG+ | Ca++ | Mg++ | Cl− | CH3SO3− | F− | |
|---|---|---|---|---|---|---|---|---|---|
| External | |||||||||
| Cs+-based, 1 mM Ca++ | 150 (105)1-a | 35 | 1 (0.27) | 83 | 100 | ||||
| Cs+-based, 10 mM Ca++ | 150 (104) | 20 | 10 (2.74) | 86 | 100 | ||||
| Internal | |||||||||
| ATP-R | 159 (105) | 5 | 70 | 60 |
↵1-a Numbers in parentheses represent the activity of an ion in the physiological salt solution.