[Concept of viral infections--from cell level to individual host level].
D001358:Avian Sarcoma Viruses; D003585:Cell Biology; D003095:Collagen Diseases / Q000382:microbiology; D004267:DNA Viruses; D003716:Dengue Virus; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000382:microbiology; D008217:Lymphocytic choriomeningitis virus; D014777:Virus Diseases / Q000276:immunology; D014780:Viruses