[Development of excitable membrane in an early embryo].
D000200:Action Potentials; D000818:Animals; D002454:Cell Differentiation; D004625:Embryo, Nonmammalian / Q000502:physiology; D007473:Ion Channels / Q000502:physiology; D008564:Membrane Potentials; D014561:Urochordata / Q000196:embryology*
D007473:Ion Channels