Time course for Molt-4 morphologic fractions formed after treatment with 8 nmol/L GW1843. Molt-4 cells in log phase were treated with GW1843 and aliquots taken at the indicated times. Phase contrast microscopy was used to score cells as live (▪), blebbed (•), or dead (▴) based on trypan blue exclusion. The graph represents the average of three separate experiments (mean ± SEM).