title: Pituitary cells producing more than one hormone human pituitary adenomas.
abstract: The existence of cells capable of producing more than one hormone in nontumorous human adenohypophyses and pituitary adenomas has been conclusively proved. In light of the evidence, current concepts on pituitary structure, function, and regulation as well as adenoma cytogenesis and classification have to be reconsidered.
authors.affiliation: Department of Pathology, St. Michael's Hospital, University of Toronto, Toronto, Ontario M5B 1W8, Canada.
authors.forename: K
authors.initials: K
authors.lastname: Kovacs
authors.forename: E
authors.initials: E
authors.lastname: Horvath
authors.forename: S L
authors.initials: SL
authors.lastname: Asa
authors.forename: L
authors.initials: L
authors.lastname: Stefaneanu
authors.forename: T
authors.initials: T
authors.lastname: Sano