title: On the content of sodium and potassium of the unfertilized egg of the medaka, Oryzias latipes and its changes accompanying fertilization.
mesh_terms: D000201:Activation Analysis; D000818:Animals; D005260:Female; D005306:Fertilization; D005399:Fishes / Q000196:embryology* / Q000378:metabolism; D010063:Ovum / Q000032:analysis / Q000378:metabolism*; D010783:Photometry; D011188:Potassium / Q000378:metabolism*; D012964:Sodium / Q000378:metabolism*
chemical_list: D012964:Sodium; D011188:Potassium