title: Demonstration of a virus-like agent contaminating material containing the Stockholm substrain of the Nichols pathogenic Treponema pallidum.
mesh_terms: D000818:Animals; D001431:Bacteriological Techniques; D001831:Body Temperature; D006224:Cricetinae; D003470:Culture Media; D003588:Cytopathogenic Effect, Viral; D006168:Guinea Pigs; D007668:Kidney; D008297:Male; D051379:Mice; D011817:Rabbits; D013045:Species Specificity; D013737:Testis / Q000382:microbiology; D014210:Treponema pallidum; D014777:Virus Diseases / Q000209:etiology*; D014780:Viruses / Q000302:isolation & purification*
chemical_list: D003470:Culture Media