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  1. Red blood cells, SEM
  2. Soap bubbles
  3. Leptin molecule
  4. pH measurement of oxide solutions
  5. Escherichia coli bacteria, SEM
  6. Marie Curie
  7. Twilight hues in the sky, Great Yarmouth, Norfolk, England
  8. Laboratory glassware
  9. Eye exam chart
  10. Human Skull
  11. Halogens
  12. Rubber and gutta-percha molecular models
  13. Blood clot, SEM
  14. Oak sapling (Quercus robur)
  15. Male skeleton, computer artwork.
  16. Triceratops
  17. Pascal's calculator, 17th Century artwork
  18. Abstract line pattern.
  19. Phases of the Moon
  20. Laboratory flask and circuit board
  21. Medical treatment, conceptual image
  22. NASA, Houston, Texas
  23. Deinonychus
  24. Chemistry apparatus
  25. Pharmacology lab work
  26. Albert Einstein, physicist
  27. Tyrannosaurus
  28. Abstract line pattern.
  29. Early electric train
  30. Cell
  31. Human nervous system from behind, artwork
  32. Quark structure of silicon atom nucleus
  33. Female muscles, artwork
  34. Pouring liquid into beaker
  35. Arterial supply and venous drainage of the organs.
  36. Diamond structure
  37. Gold Leaf Agate
  38. Antique French Grape Press
  39. Rosalind Franklin, British chemist
  40. Albert Einstein
  41. DNA
  42. Tuberculosis bacteria, artwork
  43. Alveoli
  44. Kepler Mission rocket launch
  45. Colon cancer cell, SEM
  46. Anterior neck and facial muscles of the human head (with labels)
  47. The docking of SpaceX Dragon to the International Space Station above Earth
  48. Assorted capsules and gel-caps