Fig. 2.
Kinetics and dose-response curves of apoptosis induced by PDE inhibitors.
(A) Time-course experiment. (B) Dose-reponse curves (EC50) for sildenafil, vardenafil, and MQZ. For both panels, apoptosis was determined as described in the legend to Figure 1, and results from 1 experiment representative of 2 are shown.
