Sequential forms of ATPase activity correlated with changes in cation binding and membrane potential from meiosis to first clevage in R. pipiens.

Adenosine Triphosphatases/analysis,antagonists & inhibitors Animals Anura Calcium/analysis,metabolism,pharmacology Cell Division Cell Fractionation Cell Membrane Permeability Electrophysiology Female Fertilization Magnesium/analysis,metabolism,pharmacology Meiosis Membrane Potentials Ovulation Ovum/analysis,enzymology,metabolism Phosphates/analysis Potassium/analysis,metabolism Sodium/analysis,metabolism Time Factors

Phosphates Sodium Adenosine Triphosphatases Magnesium Potassium Calcium