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  1. Muscles used in cycling, 19th century
  2. Molar tooth
  3. Wave energy
  4. Cross-section of human heart. cardiovascular system
  5. Mars topographical map, satellite image
  6. Stethoscope
  7. Molecular model
  8. Cannabinoid receptor binding, artwork
  9. Sun and its planets
  10. Space Suit
  11. Earth Agate A
  12. 1731 Johann Scheuchzer Creation 4th day b
  13. Microscope
  14. Human lungs, artwork
  15. Mushroom Chart I light
  16. Watercolor Agate I
  17. Barn owl
  18. Agate Geode I
  19. Spatial dimensions, conceptual artwork
  20. Arthritis of the knee, X-ray
  21. Cell
  22. Rocket launch
  23. Transition element solutions
  24. Pond life
  25. Crystals of magnesium sulphate
  26. Von Karman Vortices - USGS Earth as Art
  27. Nikola Tesla With Machine
  28. Cardiac muscle, TEM
  29. The Rainforest
  30. Bony framework of head and neck. skeletal system
  31. Earth Agate E
  32. Earth's magnetosphere, artwork
  33. Solar system map from 1853
  34. Pregnancy
  35. Pietersite
  36. Moss Agate
  37. Heart and lungs, historical illustration
  38. Salmonella bacteria, SEM
  39. Brass astrolabe from the middle ages
  40. Molecule Chili
  41. Lung blood vessels
  42. Living Relatives of Dinoaurs
  43. Jurassic landscape, artwork
  44. DNA
  45. Houdini Diver Suit
  46. Mistletoe - Botanical Illustration
  47. Balance
  48. Stacked Agate I