title: A direct comparison of the extracellular currents observed in the activating frog egg with the vibrating probe and patch clamp techniques.
mesh_terms: D000818:Animals; D002118:Calcium / Q000378:metabolism; D005260:Female; D007477:Ions; D008564:Membrane Potentials; D008839:Microelectrodes; D014732:Vibration; D014982:Xenopus laevis / Q000378:metabolism*; D015053:Zygote / Q000378:metabolism*
chemical_list: D007477:Ions; D002118:Calcium