Electron microscopy of glutaraldehyde and osmium tetroxide fixed ovaries reveals the nucellus cells as differentiated ones featuring large vacuoles, weakly developed RER, a relatively low hyaloplasm density, a relatively smaller size of the nucleolus and predominance of the fibrillar complex in them. Lipid bodies have been observed in the dilated sections of the space between the two membranes of the nuclear envelope or in close association with it. An explanation of this peculiarity is being sought by proceeding from analogous observations conducted by other authors.