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  1. Mitosis
  2. 1824 Buckland's Megalosaurus limb bones
  3. Mars map from 1881
  4. Cardiovascular system, artwork
  5. Heart And Lungs, Historical Illustration
  6. Stethoscope
  7. Skeleton of a Neanderthal compared with that of a modern human
  8. Comparison of healthy gums versus gingivitis
  9. Underwater earthquake and tsunami
  10. Rainhill Trials steam trains, 1829
  11. Rosalind Franklin, British chemist
  12. Pipetting
  13. Front and side views of pelvis in chimpanzee, Australopithecus, and modern human
  14. Small intestine villi, section
  15. The Pharmacist
  16. X-ray of a chest cavity
  17. Antique laudanum bottle
  18. Anatomy of human face and neck muscles, front view
  19. Molecule Testosterone
  20. Laboratory Equipments
  21. Molecule Estrogene
  22. The New Photography Or X Ray Photography From The Modern Cyclopedia Vol VI 1903
  23. Paisley Agate
  24. Streamer chamber photo of pi-mu-e decay
  25. Concentrating sunlight, 17th century
  26. Testosterone hormone
  27. Pond life
  28. Microscopic view of multiple nerve cells, known as neurons
  29. CDF particle detector, Fermilab
  30. Citric acid crystals magnified 100x
  31. Sagenite On Mexican Agate
  32. Wernher von Braun, German rocket designer
  33. Patent--Hot Air Balloon
  34. Paracelsus and the Basel tribunal
  35. Caribbean Luxury - USGS Earth as Art
  36. Nerve cell, artwork
  37. Costellazioni II
  38. Himalayas - USGS Earth as Art
  39. Velociraptor
  40. Ammonites
  41. Copper sulphate and magnesium sulphate
  42. Conversion
  43. Mining drill core sample with gold content
  44. Nikola Tesla
  45. A Relative
  46. Dentistry equipment
  47. Walnut tree trunk
  48. Medical zodiac, 15th century diagram