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  1. Brass astrolabe from the middle ages
  2. 1731 Johann Scheuchzer Creation 4th day b
  3. Pietersite
  4. Human lungs, artwork
  5. Mushroom Chart I light
  6. Sun and its planets
  7. Medical equipment on a tray
  8. Arthritis of the knee, X-ray
  9. Stethoscope
  10. Cell
  11. Solar eclipse composite, Queensland, Australia
  12. Colon blood vessels, light micrograph
  13. Space Suit
  14. Spatial dimensions, conceptual artwork
  15. Crystals of magnesium sulphate
  16. Transition element solutions
  17. Stacked Agate I
  18. Indigo Agate C
  19. Watercolor Agate I
  20. Study of the Human Figure, Lateral View
  21. Agate Geode I
  22. Stacked Agate II
  23. Bony framework of head and neck. skeletal system
  24. Agate Studies IV
  25. Earth Agate E
  26. Barn owl
  27. Rocket launch
  28. Pregnancy
  29. Lung blood vessels
  30. The Rainforest
  31. Heart and lungs, historical illustration
  32. Monarch Butterfly Metamorphosis (Danaus Plexippus)
  33. Living Relatives of Dinoaurs
  34. Gas bubbles in oil
  35. Human body showing heart and main circulatory system position
  36. Superior view of human brain with colored lobes and labels
  37. Cross Section Of Plate Boundaries Formed By Ridges, Faults, And Subduction
  38. Vitruvian Skeleton
  39. Salmonella bacteria, SEM
  40. Root canal therapy
  41. Houdini Diver Suit
  42. Mars
  43. Jurassic landscape, artwork
  44. Fossilized nautilus shell, Nautilus striatus
  45. Purple Watercolor Agate I
  46. DNA
  47. The docking of SpaceX Dragon to the International Space Station above Earth
  48. Body musculature