histology of human appendix, micrograph showing crypts of lieberkuhn

anatomy appendix cells cross crypts digestive eosin follicles gastrointestinal gut health healthy hematoxylin histology histopathology human immune intestinal intestine lieberkhn lieberkuhn light lymphatic lymphoid magnification medicine membrane micrograph microphotograph microscope microscopic microscopy mucous node normal pathology photomicrograph science section stain tissue tract vermiform