Enterochromaffin cells and carcinoid tumors.
D001063:Appendiceal Neoplasms / Q000473:pathology*; D001065:Appendix / Q000166:cytology*; D002276:Carcinoid Tumor / Q000473:pathology*; D002838:Chromaffin System / Q000473:pathology*; D004759:Enterochromaffin Cells / Q000166:cytology / Q000473:pathology*; D006801:Humans