Studies on sea urchin oocytes. I. Purification and cell fractionation.
D000818:Animals; D002458:Cell Fractionation; D002466:Cell Nucleolus; D002499:Centrifugation, Density Gradient; D005260:Female; D008722:Methods; D008854:Microscopy, Electron; D010063:Ovum / Q000166:cytology*; D011402:Pronase; D012617:Sea Urchins / Q000196:embryology*
D011402:Pronase