title: The ultrastructure of the crop in the zinc-deficient chicken.
mesh_terms: D000818:Animals; D002645:Chickens; D003426:Crop, Avian / Q000648:ultrastructure*; D009696:Nucleic Acids / Q000096:biosynthesis; D014176:Protein Biosynthesis; D015032:Zinc / Q000172:deficiency*
chemical_list: D009696:Nucleic Acids; D015032:Zinc