Figure 4. Chemical structure of antiprogestin/glucocorticoid antagonists RU486 and ZK98299. The graph shows the viability of SK-N-SH cells exposed for 9 days to 10 mM concentration of RU486 and ZK98299. Data are reported as means±SD of absorbance at 560 nm. *P<0.05 vs control (C, DMSO) (Student’s t-test).