title: Polarized cylindrical body in the epididymis of the flying squirrel.
mesh_terms: D000818:Animals; D002467:Cell Nucleus; D003593:Cytoplasm; D003594:Cytoplasmic Granules; D004822:Epididymis / Q000166:cytology*; D005260:Female; D008297:Male; D008854:Microscopy, Electron; D011247:Pregnancy; D012589:Sciuridae / Q000033:anatomy & histology*; D013094:Spermatozoa / Q000166:cytology*