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  1. Blood, light micrograph
  2. Blood samples
  3. Coloured SEM of human embryo at the 2-cell stage
  4. Brain inflammation, TEM
  5. Buckminsterfullerene molecule
  6. Passion flower pollen grain, SEM
  7. STS-112 Mission
  8. 15th century surgical equipment, artwork
  9. Close-Up of Molecular Structure Diagrams
  10. Illustration of muscle contraction
  11. Broadclub cuttlefish
  12. Illustration of action potential of a nerve cell
  13. Neck and facial nerves
  14. Edrengiyn Nuruu - USGS Earth as Art
  15. 19th-century mining machine
  16. AIDS pneumonia infection, TEM
  17. Antibiotic mechanism of action, artwork
  18. Solar cell
  19. Chemicals and rock samples in Darwin's study
  20. Surgeon in operating room
  21. Anthrax bacteria
  22. Build-up of atherosclerotic plaque in an artery
  23. Microscopic view of virus
  24. Acupuncture model
  25. Antibiotic acting on bacteria
  26. Human tongue surface, SEM
  27. Blood vessel anatomy
  28. Herceptin breast cancer drug molecule
  29. Oscilloscope trace
  30. Di(2-ethylhexyl) phthalate
  31. Robot picking bacteria containing human DNA
  32. Group of Escherichia coli bacteria cells, known as E. Coli
  33. Artist's impression of Tyrannosaurus rex
  34. Anatomy of human eye
  35. Digestive system, artwork
  36. Human immune response, artwork
  37. 1812 Egyptian Ibis
  38. Diamond structure
  39. Blood samples
  40. Bacteria infecting a macrophage, SEM
  41. Alveoli
  42. Pollen grains, SEM
  43. Fallopian tube, SEM
  44. Bone death, artwork
  45. Cephalopd eye, artwork
  46. Artwork: brain frontal areas that control the body
  47. Doctor examining MRI scans
  48. Sycamore leaf bud, light micrograph