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  1. Features of fingerprints
  2. Skin section, light micrograph
  3. Venus
  4. Coronary Artery Bypass
  5. Human tooth anatomy, diagram
  6. Male skeleton, artwork
  7. Colorized scanning electron micrograph of filamentous Ebola virus particles
  8. Abstract with element chart
  9. Historical celestial system
  10. Insulin receptor, molecular model
  11. CDF particle detector, Fermilab
  12. Caffeine crystals, SEM
  13. Cartilage cells, TEM
  14. Earth
  15. Mushroom Chart II
  16. Blue liquid being dropped into a beaker of clear water
  17. DNA nucleotides, artwork
  18. Heart and lungs
  19. 5g electron orbitals
  20. HIV virus particles, artwork
  21. Computer hard disc
  22. 1770 Cuvier Maastricht Mosasaur
  23. Mitochondrion, TEM
  24. Guitar string vibrating
  25. Charles Darwin, British naturalist
  26. Cross section image of human head
  27. Calcium phosphate crystal, SEM
  28. Galen lecturing on anatomy in Rome
  29. High-pressure steam engine, 19th century
  30. Seahorse skeleton
  31. Elastic artery cross-section, SEM
  32. Nicolaus Copernicus, Polish astronomer
  33. Orbit of the Earth
  34. Partial solar eclipse, January 2011
  35. Citric acid crystals magnified 100x
  36. Velociraptor
  37. DNA sequences
  38. Child's foot, X-ray
  39. Artwork of a plesiosaur dinosaur hunting
  40. Wine Grapevine - Botanical Illustration
  41. The bones of the neck
  42. Early American steam locomotive
  43. Electronics Illustrated, March
  44. 1920s television system, diagram
  45. Outback Abstract
  46. The increase in hominid cranial capacity over time
  47. NASA, Houston, Texas
  48. Leukemia blood cells, light micrograph