Figure 1

(a) Effects of K3R on cell viability of rotenone-induced differentiated PC12 cell damage. (b) Effects of AYB on cell viability of rotenone-induced differentiated PC12 cell damage. (c) Standardized HPLC chromatogram of SAFE. Cells were pretreated with K3R or AYB (50, 100 and 200 μM) for 6 h before rotenone treatment for 24 h. Data are the mean ± SEM, n = 4–5, ##P < 0.01 vs. untreated control (CTR) group; *P < 0.05, **P < 0.01 vs. rotenone group.