title: Na+ and K+ uptake and exchange by the amphibian oocyte during the first meitotic division.
mesh_terms: D000818:Animals; D001001:Anura; D001693:Biological Transport, Active; D005260:Female; D007700:Kinetics; D008540:Meiosis; D009865:Oocytes / Q000187:drug effects / Q000378:metabolism*; D010063:Ovum / Q000378:metabolism*; D011188:Potassium / Q000378:metabolism*; D011374:Progesterone / Q000494:pharmacology; D011894:Rana pipiens; D012964:Sodium / Q000378:metabolism*
chemical_list: D011374:Progesterone; D012964:Sodium; D011188:Potassium