title: Proteolytic enzymes in sea urchin eggs: characterization, localization and activity before and after fertilization.
mesh_terms: D000818:Animals; D002499:Centrifugation, Density Gradient; D002845:Chromatography; D004447:Echinodermata / Q000196:embryology / Q000201:enzymology*; D003576:Electron Transport Complex IV / Q000378:metabolism; D005260:Female; D005306:Fertilization; D006863:Hydrogen-Ion Concentration; D008247:Lysosomes; D008854:Microscopy, Electron; D008928:Mitochondria; D010063:Ovum / Q000201:enzymology*; D010447:Peptide Hydrolases / Q000378:metabolism*
chemical_list: D003576:Electron Transport Complex IV; D010447:Peptide Hydrolases