The Fine Structural Localization of Acid Phosphatase in the Prolactin Cell of the Eel Pituitary

In the prolactin cell of the eel adenohypophysis acid phosphatase activity occurs within the majority of the Golgi cisternae and developing secretory granules. Acid phosphatase is also present within larger membrane-bound bodies, most of which are similar to the lyric dense bodies described in other cell types. In discussing the functional significance of this enzyme distribution particular attention is paid to its association with the secretory mechanisms of the prolactin cell.