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Higher ARNT expression is associated with the sparsely granulated phenotype in somatotroph pituitary adenomas: An immunohistochemical study

Abstract Purpose Somatotroph pituitary adenomas are a heterogeneous group comprising distinct histopathological subtypes, including the well-defined densely granulated (DG) and sparsely granulated (SG) phenotypes. While the aryl hydrocarbon receptor-interacting protein (AIP) path...