Fig. 8. Effect of xestospongin C on intracellular Ca2+release. Dakiki cells in suspension in Ca2+-free Hanks balanced salt solution. Xestospongin C, 1 μm, applied at 60 s; 1 mm 4-chloro- m -cresol (4-CmC) at 370 s. Representative of several experiments that include longer preincubation times (up to 20 min).