Ultrastructural and immunocytochemical studies of the Viscacha (Lagostomus maximus maximus) pituitary pars tuberalis
- Perez Romera, Edith
- Mohamed, Fabian Heber
- Filippa, Veronica Palmira
- Fogal, Teresa Hilda
- Dominguez, Susana
- Scardapane, Luis Antonio
- Piezzi, Ramon Salvador
DOIAbstract
The hypophyseal pars tuberalis (PT) has been the focus of numerous studies attempting to understand its physiological role in the reproductive regulation and modulation by the neuroendocrine system. Ultrastructural studies of the PT in a number of species have shown that it consists of a well-developed hypophyseal area with important secretory activity, demonstrated by the abundance of secretory granules in the cytoplasm and the marked blood irrigation. This article describes ultrastructural and immunocytochemical aspects of the PT in viscachas captured in their habitat. The cell types identified were PT-specific cells, agranulated cells, and Folliculostellate cells. PT-specific cells are divided into type I and II. Type I cells have cytopl...
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