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. 2021 Oct 30;14:145. doi: 10.1186/s13048-021-00883-0

Fig. 22.

Fig. 22

Two populations of stem cells including VSELs (red arrow) and slightly bigger EnSCs (black arrow). Stem cells smears from the uterus showed asymmetrical (red broken circle), symmetrical (blue broken circle) divisions and clonal expansion (purple asterix). These stem cells expressed PCNA and FSHR. Higher magnification clearly showed asymmetrical (red asterix), symmetrical (green asterix) divisions and clonal expansion (blue arrow) [57, 68] Scale: 20 μm