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Determination of time points of hiMSC exosome treatment in POI-like mice. (A–C) The number of the primordial follicles and growth follicles were counted on the fourth, fifth and sixth days of the established POI-like mouse model. From the fifth day on, the number of primordial follicles and total follicles significantly decreased following CTX administration (n = 4). * p < 0.05, ** p < 0.01, *** p < 0.001; ns, no significance.
