title: Sea urchin eggs release protease activity at fertilization.
mesh_terms: D000818:Animals; D002247:Carbon Isotopes; D005260:Female; D005306:Fertilization; D010063:Ovum / Q000201:enzymology*; D010447:Peptide Hydrolases / Q000032:analysis / Q000378:metabolism*; D011506:Proteins / Q000378:metabolism; D012617:Sea Urchins / Q000201:enzymology*; D014357:Trypsin / Q000378:metabolism; D014361:Trypsin Inhibitors / Q000494:pharmacology
chemical_list: D002247:Carbon Isotopes; D011506:Proteins; D014361:Trypsin Inhibitors; D010447:Peptide Hydrolases; D014357:Trypsin