Ganoderic Acid D Protects Human Amniotic Mesenchymal Stem Cells against Oxidative Stress-Induced Senescence through the PERK/NRF2 Signaling Pathway

Figure 1

Characterization of the GA-D. (a) HPLC analysis; (b) molecular formula and mass spectrometry data. ESI-MS at 513.3 [M-H]^-1. (c, d) The data of ¹³C- and ¹H-NMR spectra.

(a)

(b)

(c)

(d)