Electron microscope studies on the fine structure of the ovary.  I.  Studies on the origin of yolk.
D003593:Cytoplasm; D004583:Electrons; D005260:Female; D006801:Humans; D008853:Microscopy; D008854:Microscopy, Electron; D010053:Ovary; D010063:Ovum; D012106:Research
MICROSCOPY, ELECTRON; OVUM