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Zedoary oil downregulates PCNA protein expression in AGS cells. (A-D) Cells were treated with zedoary oil (0, 30, 60 and 90 μg/mL) for 24 h, respectively. The brown color represents positive expression of PCNA protein. The blue color represents the cell nuclei of AGS cells (200×). The control cells were AGS cells cultured in Ham’s/F-12 medium containing 10% FBS and 0.1% DMSO.
