title: The subcellular distributions of some hydrolytic enzymes in unfertilized eggs of the sea urchin, Arbacia punctulata.
mesh_terms: D002499:Centrifugation, Density Gradient; D004447:Echinodermata / Q000166:cytology*; D004950:Esterases / Q000032:analysis*; D005260:Female; D006867:Hydrolases / Q000032:analysis*; D010063:Ovum / Q000201:enzymology*; D012260:Ribonucleases / Q000032:analysis
chemical_list: D006867:Hydrolases; D004950:Esterases; D012260:Ribonucleases