title: Permanently installed digestive cannulae.
mesh_terms: D000818:Animals; D002417:Cattle / Q000378:metabolism*; D005402:Fistula; D007441:Intubation, Gastrointestinal / Q000009:adverse effects / Q000662:veterinary*; D008722:Methods; D010969:Plastics; D011095:Polyethylenes; D012408:Rubber; D012417:Rumen / Q000378:metabolism / Q000502:physiology*; D013193:Stainless Steel
chemical_list: D010969:Plastics; D011095:Polyethylenes; D013193:Stainless Steel; D012408:Rubber