title: Ultrastructural changes in the hamster sperm head during fertilization.
mesh_terms: D000818:Animals; D002462:Cell Membrane / Q000032:analysis; D006224:Cricetinae; D003593:Cytoplasm / Q000032:analysis; D005260:Female; D005306:Fertilization; D006821:Hyaluronoglucosaminidase / Q000032:analysis; D008297:Male; D008854:Microscopy, Electron; D008858:Microscopy, Phase-Contrast; D010063:Ovum / Q000166:cytology; D013094:Spermatozoa / Q000166:cytology*
chemical_list: D006821:Hyaluronoglucosaminidase