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  1. Conceptual image of human backbone
  2. Scanning electron micrograph of HIV particles infecting a human T cell
  3. Coloured X-ray of a 17-jewel wrist-watch
  4. Common Dolphins
  5. DNA
  6. The analysis of sound frequencies by the basilar membrane.
  7. Sickle cell anaemia
  8. Universal indicator scale
  9. 19th Century internal combustion engine
  10. A Pair Of Carnotaurus Dinosaurs Chasing A Group Of Gasparinisaura
  11. Electromagnetic spectrum
  12. The nerve supply of the trunk
  13. The human body with superimposed colored plates by Julien Bougle
  14. Desert to Forest - USGS Earth as Art
  15. Sierra de Velasco - USGS Earth as Art
  16. Photomicroscopic close up of a snowflake crystal
  17. Bacteria infecting a macrophage, SEM
  18. Mixing Potions
  19. First Atom Bomb Test Site
  20. Bismuth crystal
  21. Conceptual image of DNA
  22. 1920s television system, diagram
  23. Mineralogie I
  24. Thomas Edison, US inventor
  25. Leukemia cells, TEM
  26. 3D rendering of a Velociraptor dinosaur skeleton, side view
  27. Cardiac muscle, SEM
  28. Arthritis of the hip, X-ray
  29. Molecule Ethanol
  30. Insulin Crystals, Light Micrograph
  31. Homeric cosmogony
  32. Fahrenheit Wind Chill Chart
  33. HaCaT culture cells, light micrograph
  34. Lavoisier equipment, 1787
  35. Base of human skull, inferior view, with labels
  36. DNA nucleotides, artwork
  37. The vertebral column
  38. Sun and its planets
  39. Electronics Illustrated, March
  40. Molecule Peppermint
  41. Crystal
  42. Keyboard Keys
  43. Tyrannosaurus rex
  44. The bones of the head, neck and face
  45. Cyanobacteria, SEM
  46. Richat Structure - USGS Earth as Art
  47. Muscles used in cycling, 19th century
  48. The Apothecary or, The Chemist