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  1. Interior of human blood vessel showing a thrombus
  2. TEEN Butterfly Flurry
  3. Growth hormone receptor, molecular model
  4. Golden-crowned Kinglet
  5. British Birds and Eggs II
  6. Araticum ape, annona montana, artwork
  7. Rhino skull Everard Home
  8. Sooty Tern
  9. Conrad Gessner's nature collection
  10. Chest Anatomy, 19th Century Illustration
  11. Flatiron Building II, New York City
  12. Summer Tree
  13. Violet Butterflies II
  14. Brain blood vessels
  15. Finding the Body of One of their Companions, Scalped and Horribly Mangled
  16. The Watermill by the Ford
  17. Hydraulics Explained
  18. Buckminsterfullerene molecule
  19. Romeo
  20. Teen Collection - Heart Attack
  21. Swallows
  22. The Birds
  23. 15th century surgical equipment, artwork
  24. Teen Collection - Sealed With Love in Pink
  25. Neck and facial nerves
  26. Maniok Illustration From The Little Book Of Wonders Of The Tropics
  27. Genetics of colour blindness, diagram
  28. Hunter of the Highlands, from 'Nature's Kingdom'
  29. Antibiotic mechanism of action, artwork
  30. Solar cell
  31. Teen Collection - Anchor Pink Chevron
  32. 19th-century mining machine
  33. 1812 Egyptian Ibis
  34. Artwork of bronchodilator action in asthma
  35. Artist's impression of Tyrannosaurus rex
  36. 1833 Jardine Papio sylvanus baboon
  37. Violin, 17th century artwork
  38. Digestive system, artwork
  39. Save the products of the land - Eat more fish, 1917
  40. Immigrants, NYC, 1877
  41. Di(2-ethylhexyl) phthalate
  42. Bone death, artwork
  43. Teen Collection - Love Flower Tattoo
  44. Cephalopd eye, artwork
  45. German printing press inventors
  46. Human immune response, artwork
  47. Guinea Fowl, from The Farnley Book of Birds, c.1816
  48. Manhattan Skyscrapers II, New York City