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  1. Oak sapling (Quercus robur)
  2. Early video phone system, 1930
  3. Chemistry apparatus
  4. Steroid use, conceptual image
  5. Early electric train
  6. Abstract line pattern.
  7. Pharmacology lab work
  8. Albert Einstein, physicist
  9. Organic synthesis
  10. Pouring liquid into beaker
  11. Cell
  12. Gold core sample
  13. Arterial supply and venous drainage of the organs.
  14. Quark structure of silicon atom nucleus
  15. Surgical instruments for use on bone
  16. Diamond structure
  17. Female muscles, artwork
  18. Tuberculosis bacteria, artwork
  19. Antibiotic acting on bacteria
  20. Anterior view of human skull, with labels
  21. The docking of SpaceX Dragon to the International Space Station above Earth
  22. Antique French Grape Press
  23. Early stromatolites, artwork
  24. Protein tyrosine phosphatase molecule
  25. Deinonychus
  26. Rosalind Franklin, British chemist
  27. Alveoli
  28. Anatomy of nasal sinuses
  29. Woolly mammoths
  30. Phosphorus
  31. Light bulb, historical artwork
  32. Alaska - USGS State Mosaic
  33. Barreal Blanco - USGS Earth as Art
  34. Anterior neck and facial muscles of the human head (with labels)
  35. Dilute hydrochloric acid reactions
  36. Suchomimus dinosaur, artwork
  37. False colour SEM of moss leaves; green
  38. Brain with skull in situ - lateral view. nervous system
  39. Boring a hole
  40. Lymphatic system of the head and neck
  41. Yellowstone
  42. Graphite
  43. Nerve cell, computer artwork
  44. Computer artwork of a beryllium atom
  45. Microprocessor chips
  46. South Dakota - USGS State Mosaic
  47. Artwork of the structure of the front of an eye
  48. Artwork of osteoarthritis of knee joint