title: Contractile responses at the surface of an amphibian egg.
mesh_terms: D000818:Animals; D001001:Anura; D001464:Barium / Q000494:pharmacology; D002118:Calcium / Q000494:pharmacology; D002462:Cell Membrane / Q000502:physiology*; D002463:Cell Membrane Permeability; D004492:Edetic Acid / Q000494:pharmacology; D005260:Female; D008854:Microscopy, Electron; D010063:Ovum / Q000187:drug effects / Q000502:physiology*; D013324:Strontium / Q000494:pharmacology; D013501:Surface-Active Agents / Q000494:pharmacology; D014817:Vitelline Membrane / Q000187:drug effects; D014945:Wound Healing / Q000187:drug effects
chemical_list: D013501:Surface-Active Agents; D001464:Barium; D004492:Edetic Acid; D002118:Calcium; D013324:Strontium