title: Ultra-violet irradiation of sea urchin eggs: a study of ultrastructure.
mesh_terms: D000818:Animals; D005260:Female; D008928:Mitochondria / Q000648:ultrastructure; D010063:Ovum / Q000528:radiation effects* / Q000648:ultrastructure; D012617:Sea Urchins; D014466:Ultraviolet Rays