Representative experimental traces showing the different effects of AC-1041 on [Ca2+]
in perfused K562 cells. Shown are the typical patterns of [Ca2+]i changes in the cells perfused with AC-1041. Increase in [Ca2+]i is denoted by a change from a ''cold'' color (blue) to a ''warmer'' color (yellow to red). Pictures 1-4 were taken at the times indicated in the graph.