Cortex Fraxini (Qingpi) Protects Rat Pheochromocytoma Cells against 6-Hydroxydopamine-Induced Apoptosis

Figure 1

Representative HPLC-UV chromatograms of (a) mixed standards and (b) QP extract. Peaks: 1 is exculin hydrate, 2 is fraxin, 3 is esculetin, and 4 is flaxetin.

(a)

(b)