Abstract

The Wulzen's cone of the bovine adenohypophysis presents a variable development and general arrangement. It is joined to the pars intermedia with no intervening connective tissue. It is covered by a single layer of cubical cell epithelium on the side of the hypophysial cleft. Immunofluorescence reveals the presence of different glandular cell types. The most abundant cells are those demonstrated by an anti-oPRL antibody and are either isolated or clustered. Other cells react with anti-hGH, anti-bLH, anti-beta aLH or anti-beta hTSH antibodies. Some cells react simultaneously with anti-beta MSH, anti-1-24ACTH, anti-17-39ACTH, anti-beta LPH and anti-beta endorphin antibodies. Cell types other than the numerous prolactin cells appear only as isolated elements. We did not observe cells reacting with anti-leu-enkephalin, anti-met-enkephalin or anti-calcitonin antibodies either in the Wulzen's cone or in the pars distalis or pars intermedia.

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