title: Fine structure of spermiogenesis in the elasmobranch fish Squalus suckleyi. I. Acrosome formation, nuclear elongation and differentiation of the midpiece axis.
mesh_terms: D000818:Animals; D002454:Cell Differentiation; D002467:Cell Nucleus; D002875:Chromosomes / Q000032:analysis; D003594:Cytoplasmic Granules; D005407:Flagella; D006056:Golgi Apparatus; D006651:Histocytochemistry; D006652:Histological Techniques; D008297:Male; D008854:Microscopy, Electron; D008928:Mitochondria; D009024:Morphogenesis; D009696:Nucleic Acids / Q000032:analysis; D009698:Nucleoproteins / Q000032:analysis; D012270:Ribosomes; D012754:Sharks; D013094:Spermatozoa / Q000166:cytology* / Q000254:growth & development
chemical_list: D009696:Nucleic Acids; D009698:Nucleoproteins