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  1. Paisley Agate
  2. Calcium phosphate crystal, SEM
  3. Barn owl
  4. The Optimist - USGS Earth as Art
  5. Male Hercules Beetle
  6. Virginia - USGS State Mosaic
  7. Standard electrical circuit symbols
  8. DNA helix
  9. Bogda Mountains - USGS Earth as Art
  10. Crystal
  11. Akpatok Island - USGS Earth as Art
  12. Montana - USGS State Mosaic
  13. Features of fingerprints
  14. Abstract line pattern.
  15. Louis Pasteur, French microbiologist
  16. Osteoblasts building healthy bone
  17. Wisconsin - USGS State Mosaic
  18. Computer hard disc
  19. Satellite view of city lights in several European and Nordic cities
  20. Drugs
  21. Aurora observations, 1839
  22. Medieval urine wheel
  23. Orbit of the Earth
  24. Map of global heat
  25. Phase separation
  26. Heart and lungs
  27. Green Blue Optic fiber
  28. DNA sequences
  29. Bacterial Growth On Culture Media
  30. Embryo development
  31. Citric acid crystals magnified 100x
  32. Vegetation Profile Of A Desert
  33. Electromagnetic spectrum, artwork
  34. F/col STM image of DNA (isometric projection)
  35. Male skeleton, artwork
  36. Bouncing ball
  37. Blood cells in blood vessel, artwork
  38. Alan Turing, British mathematician
  39. Bracken rhizome, light micrograph
  40. Iron pyrites
  41. DNA nucleotides, artwork
  42. Veins and nerves of the neck. cardiovascular system, nervous system
  43. Oregon, Owyhee. Close-up of picture jasper stone
  44. Elastic artery cross-section, SEM
  45. Breast anatomy, artwork
  46. Cut agates
  47. Coronary Artery Bypass
  48. Human skeleton