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  1. Nerve cell, artwork
  2. Male reproductive system, artwork
  3. Running On The Wind
  4. Himalayas - USGS Earth as Art
  5. Artwork of Caudipteryx sp., a bird-like dinosaur
  6. Oklahoma - USGS State Mosaic
  7. Donati's Comet of 1858, artwork
  8. Bees - Vintage Educational Poster
  9. Geography of the Heavens VI
  10. Stem cell, conceptual artwork
  11. Forensic evidence
  12. Christmas Jasper
  13. Diphtheria treatment, artwork
  14. Scanning electron micrograph of an apoptotic HeLa cell
  15. Explorer 1
  16. Human spine, side view
  17. Sets of fingerprints
  18. Computer memory chips
  19. Dentistry equipment
  20. Medical zodiac, 15th century diagram
  21. Volcanoes - USGS Earth as Art
  22. Cross section of human blood vessel showing atherosclerosis
  23. Cretaceous dinosaurs
  24. Turquoise gemstone
  25. Astronomical Chart I
  26. Geranium (Pelargonium sp.) leaves
  27. Pollen grains, SEM
  28. Ice Stars - USGS Earth as Art
  29. Eye anatomy, artwork
  30. Instruments for removing bladder stones
  31. Sea salt, SEM
  32. The analysis of sound frequencies by the basilar membrane
  33. Vermont - USGS State Mosaic
  34. Cold War medical training, 1958
  35. Dragon Lake - USGS Earth as Art
  36. Minnesota - USGS State Mosaic
  37. Anterior view and sagittal view of female urinary bladder
  38. Oregon, Owyhee. Close-up of picture jasper stone
  39. Blood types, conceptual image
  40. Artwork of drug transmission to brain nerve cell
  41. Oregon. Close-up of Owyhee Picture Jasper stone
  42. Standard electrical circuit symbols
  43. Calcium phosphate crystal, SEM
  44. Confidence of Alexander the Great into his physician Philippos, 1870
  45. Shame may be Fatal - WPA Poster
  46. Jurassic landscape, artwork
  47. The increase in hominid cranial capacity over time
  48. Computer hard disc