title: Letter: NSD and experimental work with pigs.
mesh_terms: D000818:Animals; D003037:Cobalt Radioisotopes / Q000627:therapeutic use; D008954:Models, Biological; D011867:Radioisotope Teletherapy; D011879:Radiotherapy Dosage; D013552:Swine
chemical_list: D003037:Cobalt Radioisotopes