title: Ionic basis of tip growth in the fern gametophyte.
mesh_terms: D001693:Biological Transport, Active; D004594:Electrophysiology; D007477:Ions; D008027:Light; D008564:Membrane Potentials / Q000528:radiation effects; D008839:Microelectrodes; D063245:Plant Development; D010944:Plants / Q000378:metabolism* / Q000528:radiation effects
chemical_list: D007477:Ions