part of part of develops from develops from directly develops from directly develops from enteroendocrine cell intestinal epithelial cell intestinal enteroendocrine cell The various hormone- or neurotransmitter-secreting cells present throughout the mucosa of the intestinal tract. https://cellxgene.cziscience.com/cellguide/CL_1001516 intestinal enteroendocrine progenitor intestine digestive system intestinal mucosa wall of intestine intestinal epithelium digestive tract crypt of Lieberkuhn alimentary part of gastrointestinal system epithelium of crypt of Lieberkuhn