title: Expressions of the prefertilization polar axis in sea urchin eggs.
mesh_terms: D000818:Animals; D005260:Female; D005306:Fertilization; D010063:Ovum / Q000166:cytology / Q000502:physiology*; D010860:Pigments, Biological / Q000032:analysis; D012617:Sea Urchins
chemical_list: D010860:Pigments, Biological