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