The occurrence of endocrine cells in the intestine of the lancelet, Branchiostoma japonicum. An electron microscope study.
D000818:Animals; D002816:Chordata, Nonvertebrate / Q000033:anatomy & histology*; D003594:Cytoplasmic Granules; D004847:Epithelial Cells; D006056:Golgi Apparatus; D007413:Intestinal Mucosa / Q000378:metabolism; D007422:Intestines / Q000166:cytology; D008854:Microscopy, Electron