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Ependymomas are composed of cells with regular, round to oval nuclei.
These cells were characterized by plump oval nuclei with multiple nucleoli.
The generally oval nucleus is deep staining and may have an adjacent vacuole.
On the outside lies the epitrichial layer, a mosaic of polygonal cells each with an oval nucleus near its middle.
Each cell contains a large round or oval nucleus, the protoplasm surrounding which is clear, and is not stained by chromic salts.
Hemangiopericytoma located in the cerebral cavity is an aggressive tumor of the Mesenchyme with oval nuclei with scant cytoplasm.
A layer of pavement endothelium, the cells of which are polygonal, oval, or fusiform, and have very distinct round or oval nuclei.
Electron microscopic studies in 3 cases described intracytoplasmic mucin, convoluted oval nuclei, prominent nucleoli, homogeneous euchromatin with peripheral chromatin condensation, microvilli, junctional complexes, and primitive lumen formation.
When seen in section, each cell consists of an outer non-pigmented part containing a large oval nucleus and an inner pigmented portion which extends as a series of straight thread-like processes between the rods, this being especially the case when the eye is exposed to light.
The cells of the reticulum each possess a round or oval nucleus, and like the splenic cells, they may contain pigment granules in their cytoplasm; they do not stain deeply with carmine, and in this respect differ from the cells of the Malpighian corpuscles.
Wörterbuch für Biologie