Haffen, K Mesenchyme-dependent differentiation of epithelial progenitor cells in the gut. [electronic resource] - Journal of pediatric gastroenterology and nutrition - 14-23 p. digital Publication Type: Journal Article; Review ISSN: 0277-2116 Standard No.: 10.1097/00005176-198701000-00005 doi Subjects--Topical Terms: AnimalsCell DifferentiationCell LineDigestive System--cytologyEpithelial CellsHumansStem Cells--cytology