[Morphologic and morphometric studies on the prolactin and STH cells of the adenohypophysis of milked and unmilked cows)].
By morphological and morphometric methods the appearance of prolactin- and STH-cells of the adenohypophysis from unmilked and milked cows was investigated. The prolactin-cells were influenced by the milking stimulus, but not the STH-cells. The morphological results speak in favour of a release of secretes immediately after milking. The following synthesis brings back the prolactin-cells to the normal condition. Immediately after milking the morphometric results indicate a significant shrinkage of the nuclear volumes of the prolactin-cells; afterwards they reach the initial value. It is discussed, that in the prolactin-cells the milking stimulus causes an extreme increase in activity being associated with the release of prolactin.
D000818:Animals; D001699:Biometry; D002417:Cattle; D003594:Cytoplasmic Granules; D005260:Female; D013006:Growth Hormone / Q000378:metabolism*; D007620:Karyometry; D007774:Lactation; D010902:Pituitary Gland / Q000378:metabolism*; D010903:Pituitary Gland, Anterior / Q000166:cytology / Q000378:metabolism*; D011247:Pregnancy; D011388:Prolactin / Q000378:metabolism*
D011388:Prolactin; D013006:Growth Hormone
Morphologische und morphometrische Untersuchungen an den Prolaktin- und STH-Zellen der Adenohypophyse von ungemolkenen und gemolkenen Kühen