The process in which a relatively unspecialized cell acquires specialized features of a glandular epithelial cell. A glandular epithelial cell is a columnar/cuboidal epithelial cell found in a two dimensional sheet with a free surface exposed to the lumen of a gland. (Gene Ontology, GO_0002067)
22 genes participating in the glandular epithelial cell differentiation biological process from the curated GO Biological Process Annotations 2015 dataset.