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  1. Arthritis of the knee, X-ray
  2. 1951 space shuttle design
  3. Grey Agate B
  4. Gas bubbles in oil
  5. E. coli bacteria, SEM
  6. Human lungs, artwork
  7. Tyrannosaurus rex dinosaur skull
  8. Sunflower - Botanical Illustration
  9. Monarch Butterfly Metamorphosis (Danaus Plexippus)
  10. Conceptual image of neuron
  11. Molecule Vanilin
  12. Muscles of the abdominal wall - anterior view
  13. Optical pattern
  14. Stacked Agate II
  15. Lung tissue, TEM
  16. Jurassic life, artwork
  17. Pipette Dripping Liquid Into Test Tubes
  18. Molar tooth
  19. Oil rig in the savannah of Wyoming
  20. Teach on Mars and its Moons
  21. Caduceus, artwork
  22. The Saturday Evening Post, Do As Your Doctor Tells You
  23. Museum of Science and Industry Vehicles - Chicago, IL: Retro Travel Poster
  24. Semiconservative DNA Replication
  25. Van Gogh from Space - USGS Earth as Art
  26. Sir Isaac Newton
  27. Computer hard disk assembly
  28. Cells from a urine infection, SEM
  29. Bracken rhizome, light micrograph
  30. Apothecary
  31. External auditory canal of human ear (with labels)
  32. Embryo development 24-36 hours after fertilization
  33. Jurassic dinosaurs
  34. Armillary sphere
  35. Artwork showing Chicxulub impact crater, Yucatan
  36. ECGs of a normal heart rate, artwork
  37. Body musculature
  38. Leonid meteor shower of 1833, artwork
  39. No Man's Land - USGS Earth as Art
  40. Green Blue Optic fiber
  41. Cardiac muscle, TEM
  42. Stethoscope
  43. Medical illustration detailing thoracic outlet syndrome
  44. Antique pharmacy bottles
  45. Electromagnetic spectrum
  46. Southern celestial map
  47. Bees
  48. Wave energy