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Effect of PG on the cyclin proteins of Cdc2 and cyclin B1. In the figure, 20, 40 and 80 μg/mL of PG abbreviated as PG20, PG40 and PG80, respectively. Physcion 8-O-β-glucopyranoside abbreviated as PG. A549 cells were treated with PG (20, 40 and 80 μg/mL) for 48 h, and then the cells were collected for western blot assay in vitro.
