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Cellular apoptosis in the DRG. (A) TUNEL assay was used to detect apoptotic cells in rat DRGs. (B) A statistical graph of the percentage of apoptotic cells in the DRG tissue of each group. *P<0.05 vs. control group; #P<0.05 vs. caffeine group; @P<0.05 vs. DM group. Scale bar, 50 µm. DRG, dorsal root ganglion; DM, diabetes mellitus.
