Figure 6
Flow cytometry graphs showing potassium flux in MDA-MB-453 cells by the β 2 agonist formoterol hemifumarate. A) Fluorescence in R2 (inside the cell) increased from 9.37% to 18.82% after 1 μM formoterol treatment. B) Fluorescence in R2 increased from 8.96% to 21.14% after formoterol treatment C) Fluorescence levels in R2 remained at control levels at 10.63% after addition of 50 μM clozapine along with formoterol.