title: On the de novo formation of the centriole in the activated sea urchin egg.
mesh_terms: D000818:Animals; D002455:Cell Division; D002467:Cell Nucleus; D005260:Female; D006651:Histocytochemistry; D009940:Organoids; D010063:Ovum / Q000166:cytology*; D012617:Sea Urchins / Q000196:embryology*