title: The absence of electrically demonstrable polarizing factors in Hydra.
mesh_terms: D000818:Animals; D003063:Cnidaria / Q000254:growth & development*; D004586:Electrophoresis; D004594:Electrophysiology; D008433:Mathematics; D012038:Regeneration; D013217:Starvation; D013696:Temperature; D013997:Time Factors