title: Electron spin resonance studies on living cells. 1. The eggs and embryos of amphibians.
mesh_terms: D000818:Animals; D001001:Anura; D004578:Electron Spin Resonance Spectroscopy; D004625:Embryo, Nonmammalian / Q000032:analysis*; D005260:Female; D005609:Free Radicals / Q000032:analysis; D066298:In Vitro Techniques; D008722:Methods; D010063:Ovum / Q000032:analysis*
chemical_list: D005609:Free Radicals