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  1. Light bulb, historical artwork
  2. Anatomy of female reproductive system
  3. Rainhill Trials steam trains, 1829
  4. Veterinarians examining the Greyhound in the office
  5. Compound Eye Of A Flower Fly
  6. Chemistry beakers and stack of books
  7. Test Tubes
  8. Human skull
  9. Kidney glomeruli, SEM
  10. Geography of the Heavens VIII
  11. TEM of Proteus mirabilis bacterium
  12. Small intestine villi, section
  13. Healthcare, conceptual image
  14. Practical Television, February 1958
  15. Bee anatomy, artwork
  16. Concentrating sunlight, 17th century
  17. Rib cage of human skeleton
  18. Retina in glaucoma, artwork
  19. Section through a pine needle, LM
  20. Anterior view and sagittal view of male urinary bladder
  21. View Of Saturn From The Surface Of Mars, A Composite Image
  22. Arm anatomy, historical artwork
  23. Water wheel
  24. Zasite Stone With Rudby
  25. Male skeleton, computer artwork.
  26. Molecule THC
  27. Arteries of the posterior abdominal wall. cardiovascular system
  28. Plant stem inside a beaker
  29. Fluid aspirate from staph infection
  30. Artwork of effects of asthma inhaler on man's lung
  31. Jonathan Hulls' steamboat, 18th century
  32. Insect microscopy, 19th century
  33. 50 Kilowatt Broadcasting Modulator
  34. Conceptual image of DNA
  35. Triceratops
  36. Edwin Hubble, US astronomer
  37. Earliest recording of a European meteorite
  38. Surgical instruments for use on bone
  39. Pea flower pollination, SEM
  40. The International Space Station in orbit above Earth
  41. Test Tube Experiment
  42. Artwork of a Tyrannosaurus rex dinosaur
  43. 3<4
  44. Respiratory tract, artwork
  45. Stem cell, light micrograph
  46. Rock formation and erosion cycle
  47. Nedoceratops dinosaur, artwork
  48. Illustration of arthritis sites on the body