title: The production of large gnotobiotic animals and their use in the preparation of virus reference sera.
mesh_terms: D000818:Animals; D000830:Animals, Laboratory; D000918:Antibody Specificity; D001947:Breeding; D002417:Cattle; D004770:Enterovirus / Q000276:immunology; D005856:Germ-Free Life; D006736:Horses; D007106:Immune Sera / Q000592:standards; D008954:Models, Biological; D012756:Sheep; D013552:Swine; D014780:Viruses / Q000302:isolation & purification*
chemical_list: D007106:Immune Sera