Isolation of the plasma membrane from the sea urchin egg.
D000818:Animals; D002462:Cell Membrane; D002498:Centrifugation; D004447:Echinodermata; D005260:Female; D005306:Fertilization / Q000502:physiology; D006652:Histological Techniques; D008297:Male; D008722:Methods; D010063:Ovum / Q000166:cytology*