Fig. 2.

Effects three flavone glycosides from EtOAc fraction on cell viability and MMP-1 expression in UVB-induced Hs68 cells. (A) Active guided fractionation of HJE (B) Chemical structure of isolated compound (1), (2), and (3) from EtOAC-12 fraction by preparative HPLC. (C) Cell viability was examined with isolated compounds. (D) Quantified protein level of MMP-1 in cells pretreated with isolated compounds. Results are expressed as mean ± SD of triplicate experiments (*P < 0.05, ^##P < 0.01, **P < 0.01).