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  1. Skeleton of a Neanderthal compared with that of a modern human
  2. Molecule Licorice
  3. Wilson Dam, Flood Gates
  4. Ear trumpets
  5. Mars topographical map, satellite image
  6. Foot bones
  7. Bees - Vintage Educational Poster
  8. Gem Stones III
  9. Scoliosis of the spine, artwork
  10. Arthritis of the knee, X-ray
  11. Cut agates
  12. Cannabinoid receptor binding, artwork
  13. Pastel Periodic Table - Classic Text
  14. Front and side views of pelvis in chimpanzee, Australopithecus, and modern human
  15. Indigo Agate D
  16. Cell
  17. Molecular graphic of a molecule of water
  18. Bright Periodic Table - White, Classic Text
  19. Hydroxide precipitates
  20. Stamp out Syphilis and Gonorrhea - WPA Poster
  21. Specimen of heart with heartworms in jar
  22. Motor neurone nerve cell and synapses
  23. Gold nugget held in tweezers
  24. Normal shoulder, X-ray
  25. Dental X-ray
  26. Neptune
  27. Eye anatomy, 1844 artwork
  28. The vertebral column
  29. Replica Of Eli Whitney's Cotton Gin
  30. Electric light bulb
  31. Diphtheria treatment, artwork
  32. First V-2 rocket launch, artwork
  33. Hampton Institute, 1899
  34. Lactobacillus bacteria, SEM
  35. Heart anatomy, 18th century
  36. Brain blood vessels
  37. Molecule Honey
  38. Close-Up Of Fortification Laguna Agate
  39. Turquoise gemstone
  40. Molecule Peppermint
  41. Ear trumpets
  42. Christmas Jasper
  43. DNA assembly, artwork
  44. Cold War medical training, 1958
  45. Microscopic view of DNA
  46. Decoherence in quantum computing
  47. Rib cage and heart, 3D CT scan
  48. Early Stone Implements