F. Figen KAYMAZ, Attila DAĞDEVİREN

84127

Thymic Nurse Cells Determined In Situ at the Light and Electron Microscopic Level

Thymic nurse cells are isolated thymic epithelial/thymocyte complexes described in vitro. Their in vivo existence is controversial. We examined rat thymi in order to distinguish thymic nurse cells in vivo using the zinc iodide-osmium tetroxide (ZIO) fixation/staining technique. There were mainly two types of strongly ZIO reactive cells in the thymic cortex: macrophages and small clusters of thymic epithelial cells. The latter group was composed of thymic epithelial cells and intact thymocytes forming complexes. Thus we suggest that these structures are in situ equivalents of thymic nurse cells.

Anahtar Kelimeler:

Thymic nurse cells, Zinc iodide-osmium tetroxide, Light microscopy, Electron microscopy

Thymic Nurse Cells Determined In Situ at the Light and Electron Microscopic Level

Thymic nurse cells are isolated thymic epithelial/thymocyte complexes described in vitro. Their in vivo existence is controversial. We examined rat thymi in order to distinguish thymic nurse cells in vivo using the zinc iodide-osmium tetroxide (ZIO) fixation/staining technique. There were mainly two types of strongly ZIO reactive cells in the thymic cortex: macrophages and small clusters of thymic epithelial cells. The latter group was composed of thymic epithelial cells and intact thymocytes forming complexes. Thus we suggest that these structures are in situ equivalents of thymic nurse cells.

Keywords:

Thymic nurse cells, Zinc iodide-osmium tetroxide, Light microscopy, Electron microscopy,

Turkish Journal of Veterinary and Animal Sciences-Cover

ISSN: 1300-0128
Yayın Aralığı: 6
Yayıncı: TÜBİTAK

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