Abstract
In recent years morphological study of pituitary adenomas has remarkably proceeded by the development of electron microscopic technic. Besides, a great amount of studies on pituitary hormones have been presented in the field of endocrinology. But there are still many unsolved problems on the correlation between morphological property and hormone secretion of each pituitary adenoma cell and there is much confusion in existence of secretory granules and endocrinological activity of chromophobe adenomas. In order to make clear the relationship between cell types and the functions of pituitary adenoma cells, the author investigated the hormone producing activity of them by means of cell culture with major emphasis on the chromophobe adenomas.
