Fig. 3. Apoptosis initiation results in DIDS-sensitive Cl^– movement across the plasma membrane. (A) Representative images depict cell size as well as SPQ and GFP intensity just prior to (t=0) and 27 minutes after the addition of control or STS media. (B) Mean time normalized intensity curves quantify the changes depicted in A. Data are the mean results from three independent experiments. Error bars represent s.e.m. with n=10 samples in each experiment.