title: Large decrease in zymogen granule size in the postnatal rat pancreas.
mesh_terms: D000367:Age Factors; D000828:Animal Population Groups / Q000033:anatomy & histology*; D000818:Animals; D000831:Animals, Newborn / Q000033:anatomy & histology*; D000833:Animals, Suckling / Q000033:anatomy & histology*; D003594:Cytoplasmic Granules / Q000648:ultrastructure; D004792:Enzyme Precursors / Q000378:metabolism; D010179:Pancreas / Q000201:enzymology / Q000254:growth & development / Q000648:ultrastructure*; D051381:Rats
chemical_list: D004792:Enzyme Precursors