Fig. 5

CF and its compounds inhibited the senescence of NRK-52E cells induced by D-gal. a Detection of cell viability of CF and its chemical components. b β-galactosidase staining of NRK-52E cells. Scale bars: 50 μm. CF: C. flabellate extract; D-gal: D-galactose; SDC-0-14,16: 3,4-dihydroxyphenylethanol; SDC-1-8: (3,4-dihydroxyphenylethanol-8-O-[4-O-trans-caffeoyl-β-D-apiofuranosyl-(1→3)-β-D-glucopyranosyl (1→6)]-β-D-glucopyranoside; SDC-0-60: p-hydroxybenzyl alcohol. Data represent the mean values ± SD from three independent experiments. ^*P < 0.05 and ^**P < 0.01 vs. the D-gal group