title: An electrical block is required to prevent polyspermy in eggs fertilized by natural mating of Xenopus laevis.
mesh_terms: D000200:Action Potentials; D000818:Animals; D003307:Copulation / Q000502:physiology; D005260:Female; D005306:Fertilization / Q000187:drug effects; D005307:Fertilization in Vitro; D008297:Male; D008564:Membrane Potentials / Q000187:drug effects; D008854:Microscopy, Electron; D009994:Osmolar Concentration; D010063:Ovum / Q000502:physiology*; D012965:Sodium Chloride / Q000494:pharmacology; D012974:Sodium Iodide / Q000494:pharmacology; D014817:Vitelline Membrane / Q000502:physiology; D014982:Xenopus laevis
chemical_list: D012965:Sodium Chloride; D012974:Sodium Iodide