Mechanical properties of the surface of the sea urchin egg at fertilization and during cleavage.
D000818:Animals; D002455:Cell Division; D003593:Cytoplasm / Q000502:physiology; D055590:Electromagnetic Phenomena; D005260:Female; D005306:Fertilization; D006863:Hydrogen-Ion Concentration; D010063:Ovum / Q000502:physiology* / Q000648:ultrastructure; D012617:Sea Urchins / Q000196:embryology; D013499:Surface Properties; D013696:Temperature; D013997:Time Factors