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  1. Blood cells in blood vessel, artwork
  2. Ammonites
  3. Medieval urine wheel
  4. Star trails and bioluminescence, Gippsland Lakes, Australia
  5. X-ray of a chest cavity
  6. H1N1 flu virus particle, artwork
  7. Lungs in situ - anterior view. respiratory system
  8. Artwork of drug transmission to brain nerve cell
  9. Mars map from 1881
  10. CDF particle detector, Fermilab
  11. Animal Cell, Illustration
  12. Sagenite On Mexican Agate
  13. Costellazioni II
  14. Stethoscope
  15. Anatomy of the bronchus and bronchial tubes
  16. Underwater earthquake and tsunami
  17. The vertebral column
  18. Front and side views of pelvis in chimpanzee, Australopithecus, and modern human
  19. Copper sulphate and magnesium sulphate
  20. Laboratory Equipments
  21. 1824 Buckland's Megalosaurus limb bones
  22. Molecule Testosterone
  23. Paisley Agate
  24. The Pharmacist
  25. Bouncing ball
  26. Electric Streetlight, 1881
  27. Anatomy of human face and neck muscles, front view
  28. Citric acid crystals magnified 100x
  29. Skeleton of a Neanderthal compared with that of a modern human
  30. Molecule Chili
  31. Pond life
  32. Cardiovascular system, artwork
  33. The New Photography Or X Ray Photography From The Modern Cyclopedia Vol VI 1903
  34. Heart And Lungs, Historical Illustration
  35. Male reproductive system, artwork
  36. Patent--Hot Air Balloon
  37. Antique laudanum bottle
  38. Heart and lungs
  39. Testosterone hormone
  40. Molecule Estrogene
  41. Cutting out the Stone of Madness or an Operation on the Head
  42. Microscopic view of multiple nerve cells, known as neurons
  43. Explorer 1
  44. Conversion
  45. Walnut tree trunk
  46. Mining drill core sample with gold content
  47. Normal wrist, X-ray.
  48. Cardiac muscle, SEM