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  1. Scanning electron micrograph of HIV particles infecting a human H9 T cell
  2. Bacteria infecting a macrophage, SEM
  3. H1N1 flu virus particle, artwork
  4. Antibiotic destroying a bacterium
  5. Legionella bacteria
  6. Bacteria infecting a macrophage, SEM
  7. Bacteria infecting macrophage cells, SEM
  8. Syphilis bacterium (Treponema pallidum)
  9. Marburg virus, TEM
  10. Gonorrhoea bacteria, TEM