Calcium Ionophore Solution
Add 5 μL of calcium ionophore A23187 (Sigma-Aldrich C7522; 10 mg/mL stock in DMSO; stored at 4°C protected from light) to 100 mL of 0.2× Marc's modified Ringer's (MMR; from 20× stock). Prepare fresh and use immediately.
Add 5 μL of calcium ionophore A23187 (Sigma-Aldrich C7522; 10 mg/mL stock in DMSO; stored at 4°C protected from light) to 100 mL of 0.2× Marc's modified Ringer's (MMR; from 20× stock). Prepare fresh and use immediately.