title: Fine-grained secretory cells in the intestine of the lancelet, Branchiostoma (Amphioxus) laneceolatum studied by light microscopy.
mesh_terms: D000818:Animals; D002466:Cell Nucleolus; D002467:Cell Nucleus; D002816:Chordata, Nonvertebrate / Q000166:cytology; D002923:Cilia; D003594:Cytoplasmic Granules; D004798:Enzymes / Q000378:metabolism; D004847:Epithelial Cells; D005260:Female; D007413:Intestinal Mucosa / Q000378:metabolism; D007422:Intestines / Q000166:cytology*; D008297:Male; D011506:Proteins / Q000378:metabolism
chemical_list: D004798:Enzymes; D011506:Proteins