title: Contraction of protoplasm. IV. Cinematographic analysis of unfertilized sea urchin eggs stimulated with continuous direct current.
mesh_terms: D000818:Animals; D004558:Electric Stimulation; D004594:Electrophysiology; D005260:Female; D007700:Kinetics; D009040:Motion Pictures; D010063:Ovum / Q000502:physiology*; D010784:Photomicrography; D012617:Sea Urchins / Q000502:physiology*