This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Human intestinal glands contain ___ 
Select and explain. 
A. Paneth cells, B. Neuroendocrine cells, C. Stem cells, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: In histology, an intestinal gland (also crypt of Lieberkuhn and intestinal crypt) is a gland found in between villi in the intestinal epithelium lining of the small intestine and large intestine (or colon). The glands and intestinal villi are covered by epithelium, which contains multiple types of cells: enterocytes (absorbing water and electrolytes), goblet cells (secreting mucus), enteroendocrine cells (secreting hormones), cup cells, tuft cells , and at the base of the gland, Paneth cells (secreting anti-microbial peptides) and stem cells. Ref - medscape.com