title: Fine structure of spermatogonia and spermatocytes in the blue fox (Alopex lagopus).
mesh_terms: D000818:Animals; D005298:Fertility; D005589:Foxes; D008297:Male; D012621:Seasons; D013090:Spermatocytes / Q000648:ultrastructure*; D013093:Spermatogonia / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*