STRUCTURAL, IMMUNOCYTOCHEMICAL AND ULTRASTRUCTURAL STUDY OF GH CELLS OF LAMB (<i>OVIS ARIES</i> L.)
Abstract
The distribution, structure and ultrastructure of cells containing GH hormone were investigated in lamb pituitary glands using avidin biotin peroxidase complex method (ABC) on paraplast sections and peroxidase antiperoxidase complex method (PAP) on semithin sections contrasted by light microscopy and then studied in electron microscopy. GH cells aecount for 15-20% of adenohypophyseal glandular cells and are distributed ¡nto the whole Pars distalis (PD), except in the anterocaudo-dorsal fringe which run across the PD in saggital cut. Their size is 12,7 µm and 14,3 µm in males and females, respectively. Ultrastructurally they are characterized by very electrodense secretory spherical granules of 290,99 nm in diameter.Downloads
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