title: Electron spin resonance (ESR) studies on living cells. II. Normal development of amphibians.
mesh_terms: D000663:Amphibians; D000818:Animals; D002025:Bufonidae; D002455:Cell Division; D004578:Electron Spin Resonance Spectroscopy; D004625:Embryo, Nonmammalian; D005260:Female; D005306:Fertilization; D005855:Germ Layers; D010063:Ovum; D011896:Rana temporaria; D014981:Xenopus