title: [Sodium, potassium, magnesium and calcium distribution in the oocytes of the common frog based on x-ray microanalysis data].
abstract: Using X-ray microanalysis, the contents and distribution of Na, K, Mg, Ca and some other elements were studied in ovary and ovariole oocytes of the grass frog R. temporaria. The increased K and Mg concentrations were found in the oocyte cytoplasm pigmented zone. The concentration of K in the nucleus is higher than in the cytoplasm, whereas that of P and S lower. The same concentration of Na was found in the nucleus and cytoplasm. High concentrations of K and S are noticed in the oocyte jelly envelope.
mesh_terms: D000818:Animals; D002118:Calcium / Q000032:analysis*; D004577:Electron Probe Microanalysis; D005260:Female; D008274:Magnesium / Q000032:analysis*; D009865:Oocytes / Q000032:analysis*; D010063:Ovum / Q000032:analysis*; D011188:Potassium / Q000032:analysis*; D011896:Rana temporaria; D012621:Seasons; D012964:Sodium / Q000032:analysis*
chemical_list: D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium
vernacular_title: Raspredelenie natriia, kaliia, magniia i kal'tsiia v ootsitakh travianoĭ liagushki po dannym rentgenovskogo mikroanaliza.