title: An ultrastructural analysis of mitosis and cytokinesis in the zygote of the sea urchin, Arbacia punctulata.
mesh_terms: D000818:Animals; D002467:Cell Nucleus; D004721:Endoplasmic Reticulum; D005260:Female; D005306:Fertilization; D008854:Microscopy, Electron; D008938:Mitosis; D009024:Morphogenesis; D010063:Ovum / Q000166:cytology*; D012617:Sea Urchins / Q000166:cytology*