title: Two classes of spermatogonial stem cells in the monkey (Cercopithecus aethiops).
mesh_terms: D000818:Animals; D001345:Autoradiography; D000882:Haplorhini; D008297:Male; D008938:Mitosis; D008954:Models, Biological; D013094:Spermatozoa / Q000166:cytology / Q000502:physiology*; D013936:Thymidine; D014316:Tritium
chemical_list: D014316:Tritium; D013936:Thymidine