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H&E pathological observation of epididymal tissue in mice. Magnification 100×. LDSB: Mice treated with Lactobacillus delbrueckii subsp. bulgaricus (1.0 × 109 CFU/kg); LF-CQPC05: Mice treated with Lactobacillus fermentum CQPC05 (1.0 × 109 CFU/kg); l-carnitine: l-carnitine (200 mg/kg).
