title: On some factors involved in virulence of Bacteroides fragilis.
mesh_terms: D000818:Animals; D001442:Bacteroides Infections / Q000401:mortality / Q000473:pathology*; D001441:Bacteroides fragilis / Q000472:pathogenicity*; D004926:Escherichia coli / Q000472:pathogenicity; D005673:Fusobacterium / Q000472:pathogenicity; D051379:Mice