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Images (A) of mitochondrial content level (B) at 0 h, AGED-24 h, AGED+NMN-24 h, AGED-48 h and AGED+NMN-48 h oocytes. Scale bars represented 100 μm. Images (C) of mitochondrial membrane potential level (D) at 0 h, AGED-24 h, AGED+NMN-24 h, AGED-48 h and AGED+NMN-48 h oocytes. *p < 0.05 indicated significant differences. Scale bars represented 100 μm.
