Figure 1. Dopamine-induced concentration-dependent stimulation of intracellular calcium mobilization in CHO-K1/D5/Gα15 cells. The cells were loaded with Calcium-4 prior to being stimulated with agonist dopamine. The intracellular calcium change was measured by FLIPR. The relative fluorescent units (RFU) were normalized and plotted against the log of the cumulative doses of dopamine (Mean ± SD, n = 2). The EC50 of dopamine on this cell was 6.5 nM.
1. EC50 value is calculated with four parameter logistic equation:
Y=Bottom + (Top-Bottom) / (1+10^ ((LogEC50-X)*HillSlope))
X is the logarithm of concentration.
Y is RFU and starts at Bottom and goes to Top with a sigmoid shape.
2. Signal to background Ratio (S/B) = Top/Bottom
CHO-K1/D5/Gα15 Stable Cell Line
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