Time-course of Ca²⁺-mobilization induced by ASA (A), NaS (B), or ionomycin (C) in T cells loaded with Fura 2/AM. Cells were incubated in complete medium and stimulated after 60 seconds (arrow) with different concentrations of salicylates or ionomycin. Results of experiments in which T cells were incubated in Ca²⁺-free medium in the presence of 1 mmol/L EGTA are also shown (A and B). Data are expressed as the mean SEM of 20 determinations.