oocyte

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Related to Cell nest: chondrification

oocyte

[′ō·ə‚sīt]
(histology)
An egg before the completion of maturation.
References in periodicals archive ?
CD4+ T cells in cancer stroma, not CD8+ T cells in cancer cell nests, are associated with favorable prognosis in human non-small cell lung cancers.
The basal and peritrophic membranes exhibited a moderate reaction to PAS, allowing their identification; whereas the regenerative cell nests and muscle layers were negative for this histochemical test (Fig.
Flattened sustentacular cells can sometimes be highlighted in the periphery of the cell nests with S-100 protein.
Cell nests were separated by thin fibrous bands and, at places, pink hyaline material.
The characteristic cell nests surrounded by highly vascularized stroma ("zellballen pattern") support the diagnosis of paraganglioma.
Prominent epithelial infiltration by lymphocytes is characteristic (figure, B), as is the presence of epimyoepithelial islands, which are epithelial cell nests extensively infiltrated by lymphocytes (figure, C).
The defining female characteristics were the formation of protogonial germ tissue into spherical germ cell nests, separation of a tissue layer from the outer epithelial layer of the lobe-forming ovarian walls, a tissue bud growing from the suspensory tissue that helped form the ovary wall, and the proliferation of oogonia and oocytes.
Histology showed that this lesion had deep penetrating tumor cell nests that obliterated the normal structure of the sebaceous gland.