The developmental process, independent of morphogenetic (shape) change, that is required for a glandular epithelial cell to attain its fully functional state. A glandular epithelial cell is a columnar/cuboidal epithelial cell is a cell found in a two dimensional sheet with a free surface exposed to the lumen of a gland. [GOC:dph]
Full description or abstract
Collection
C5: Ontology GO: Gene Ontology GO:BP: GO Biological Process