In mammals. the biological activity of the stem/progenitor compartment sustains production of mature gametes through spermatogenesis. Spermatogonial stem cells and their progeny belong to the class of undifferentiated spermatogonia. a germ cell population found on the basal membrane of the seminiferous tubules. https://www.itsmajorlook.com/super-save-OffWorld-Percussion-Outlander-Practice-Pad-limited-super/