Extracellular Recording Solution
| Reagent | Concentration |
|---|---|
| CaCl2 or BaCl2 | 10 mm |
| MgCl2 | 1 mm |
| Tris | 150 mm |
| Prepare Ca2+- and Ba2+-containing variants of the solution to measure Ca2+-dependent inactivation and voltage-dependent inactivation, respectively, of voltage-gated Ca2+ channels. Adjust pH to 7.3 using methanesulfonic acid. (The osmolarity should be ~290–310.) Filter and store at 4°C. | |
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