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Paeoniflorin shows a protective effect from injury by MPP+ under light microscopy. (a) Normal PC12 cells (×100). (b) MPP+ treated PC12 cells at 24 h (×100-fold). (c) Paeoniflorin treated cells 24 h after MPP+ treatment (×100). (d) Normal PC12 cells (×400). (e) MPP+ 24 h (×400). (f) Paeoniflorin treated cells 24 h after MPP+ treatment (×400).
