Figure 1.

Inhibition by PP2 or SKI-1 of zymosan- and S.aureus-induced release of arachidonate. Macrophages were labeled with [3H]arachidonic acid for 20 h. The cells were pretreated for 15 min with the indicated concentrations of PP2 (A) or SKI-1 (B) followed by stimulation with either zymosan (●) for 45 min or S.aureus (▲) for 60 min. Results are mean ± SEM (n = 3) and corrected for the release in control cultures.