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  1. Bacteria infecting macrophage cells, SEM
  2. AIDS pneumonia infection, TEM
  3. Microscopic view of cell and virus
  4. Microscopic view of Penicillium expansum
  5. E. coli bacteria
  6. Salmonella, TEM
  7. Anaerobiospirillum thomasii flagella, TEM
  8. Marburg virus, TEM
  9. Bacteria infecting a macrophage, SEM
  10. Antibiotic cell membrane effect, artwork
  11. Antibiotic mechanism of action, artwork
  12. Sleeping sickness parasite
  13. Microscopic view of Listeria monocytogenes
  14. E. coli bacteria strain O157:H7, TEM
  15. Microscopic view of Stachybotrys chartarum
  16. Epithelial gonorrhoea infection, SEM
  17. Viral transfer of bacterial DNA, artwork
  18. Conceptual image of salmonella
  19. Microscopic view of Stachybotrys