Hydroxylated and one monomethoxylated stilbene had modest beneficial effects on adult C. elegans survival. (A, C, E) Representative survival curves of adult sterile fem-1(hc17) animals treated with indicated doses of each compound or vehicle in the medium. Experiments for each compound were conducted concurrently for all doses shown. (B, D, F) Summary data from n = 1–3 independent experiments per concentration tested, showing dose-response for each compound. Complete survival statistics are presented in Table 1.