Pathogenesis: of host and pathogen.
D000818:Animals; D001419:Bacteria / Q000472:pathogenicity*; D001424:Bacterial Infections / Q000276:immunology*; D006790:Host-Parasite Interactions / Q000502:physiology*; D014774:Virulence / Q000276:immunology*; D014780:Viruses / Q000472:pathogenicity*