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  1. Oil refining process
  2. Noses
  3. Nose, mouth and throat
  4. Nerve synapse
  5. Nerve cell, computer artwork
  6. Mitosis
  7. Mechanics of swallowing, diagram
  8. Measuring electric voltage
  9. Measuring electric current
  10. Map showing the Local Arm in the Milky Way
  11. Lungs
  12. Lung bronchioles
  13. Lamps connected in series
  14. Lamps connected in parallel
  15. Laika the space dog postcard
  16. ITER fusion research reactor
  17. Inner ear
  18. Illustration showing the major coronary arteries
  19. Illustration of the human placenta
  20. Illustration of rods and cones in the retina
  21. Illustration of lung bronchioles and alveoli
  22. Illustration of a 32 day old human embryo
  23. Human heart, artwork
  24. Historical artwork of the constellation of Leo
  25. Historical artwork of the constellation Aquarius
  26. Eye anatomy, artwork
  27. Explorer 1
  28. Embryo development
  29. Electronic and biologic systems, artwork
  30. Earliest recording of a European meteorite
  31. Composite image of the phases of the Moon
  32. Colored engraving of Newton's reflecting telescope
  33. Colliding beam fusion reactor
  34. Cell division
  35. Car design
  36. Brass astrolabe from the middle ages
  37. Brain and vision
  38. Artwork: brain frontal areas that control the body
  39. Artwork showing the pupil of eye in varying light
  40. Artwork of the structure of the front of an eye
  41. Artwork of the pancreas showing insulin production
  42. Artwork of structures within a human nerve
  43. Artwork of Mars Polar Lander descending onto Mars
  44. Artwork of human fertilisation and implantation
  45. Artwork of foetus at 36th week of pregancy
  46. Artwork of foetal blood flow through placenta
  47. Artwork of eye
  48. Artwork of drug transmission to brain nerve cell