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  1. Tuberculosis bacteria
  2. Petri dish bacterial cultures, picking a colony
  3. Helicobacter pylori bacteria
  4. Conceptual image of influenza causing flu
  5. Microscopic view of diplococcus bacterium
  6. Pseudomonas aeruginosa bacteria, SEM
  7. Virus, artwork
  8. Staphylococcus epidermidis bacteria
  9. Oral Streptococcus Bacteria, SEM
  10. Bacteria infecting a macrophage, SEM
  11. Used interdental brush, SEM
  12. Tongue bacteria, SEM
  13. Legionella bacteria
  14. TEM of Bordetella pertussis bacteria
  15. Artistic representation of the immune system's reaction to bacteria invading the tissues
  16. Bilharzia infection, ureter tissue
  17. Stack of petri dishes with bacterial cultures
  18. Vibrio cholerae bacterium, TEM
  19. Cryptosporidiosis, TEM
  20. Pseudomonas aeruginosa bacteria, SEM
  21. Bacterial lung infection
  22. Conceptual image of flagellate bacterium
  23. Enterococcus faecalis bacteria, SEM
  24. Hepatitis C virus, molecular model
  25. Conceptual image of plasmodium causing malaria
  26. Clostridium difficile bacteria, TEM
  27. Tongue bacteria, TEM
  28. Gonorrhoea bacteria, TEM
  29. Clostridium botulinum bacteria with spores
  30. Bladder cancer cells dividing, SEM
  31. Microscopic view of herpes virus
  32. Rod-shaped bacteria, artwork
  33. E. coli bacteria, SEM
  34. Ebola viruses, artwork
  35. Anthrax bacteria
  36. AIDS pneumonia infection, TEM
  37. Bacteriophage virus, artwork
  38. Cell division in Salmonella bacterium
  39. Microscopic view of ebola virus
  40. Tongue bacteria, SEM
  41. Helicobacter pylori bacterium, TEM
  42. Gut bacterium, TEM
  43. Salmonella bacteria, SEM
  44. Microscopic view of cell and virus
  45. Marburg virus, TEM
  46. Bacteria infecting macrophage cells, SEM
  47. Antibiotic cell membrane effect, artwork
  48. Anaerobiospirillum thomasii flagella, TEM