title: Ultrathin-sectioning of the limited area for electron microscopy from serial one micron sections.
mesh_terms: D000818:Animals; D006224:Cricetinae; D005260:Female; D005306:Fertilization; D008854:Microscopy, Electron / Q000379:methods*; D008867:Microtomy / Q000379:methods*; D010063:Ovum / Q000648:ultrastructure; D010066:Ovum Transport; D011247:Pregnancy