Fig. 20From: Endogenous, tissue-resident stem/progenitor cells in gonads and bone marrow express FSHR and respond to FSH via FSHR-3Left panel: Hyperplasia of epithelial cells was confirmed by nuclear expression of PCNA after FSH treatment. Stem cells also expressed PCNA (arrows). Small clusters of cells also expressed PCNA (broken circle in C, F). Right panel: Small spherical cells also expressed nuclear OCT-4 whereas the epithelial cells expressed cytoplasmic OCT-4 [68]. Scale: 20 μmBack to article page