title: Intranasal infection of gnotobiotic piglets with Mycoplasma hyorhinis: differences in virulence of the strains and influence of age on the development of infection.
mesh_terms: D000818:Animals; D005856:Germ-Free Life; D009174:Mycoplasma / Q000472:pathogenicity*; D009175:Mycoplasma Infections / Q000662:veterinary*; D013552:Swine; D013553:Swine Diseases / Q000382:microbiology*; D014774:Virulence