title: Purification of cortical granules from unfertilized sea urchin egg homogenates by zonal centrifugation.
mesh_terms: D000135:Acid Phosphatase / Q000378:metabolism; D000818:Animals; D002458:Cell Fractionation; D002501:Centrifugation, Zonal; D003594:Cytoplasmic Granules / Q000032:analysis*; D005260:Female; D006025:Glycosaminoglycans / Q000378:metabolism; D006026:Glycoside Hydrolases; D006651:Histocytochemistry; D008854:Microscopy, Electron; D010063:Ovum; D011506:Proteins / Q000378:metabolism; D012617:Sea Urchins / Q000196:embryology*
chemical_list: D006025:Glycosaminoglycans; D011506:Proteins; D000135:Acid Phosphatase; D006026:Glycoside Hydrolases