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  1. Digestive system, artwork
  2. Development of Arabic numerals
  3. Detached blood clot, artwork
  4. Cryptogamic plants, 19th century artwork
  5. Conrad Gessner's nature collection
  6. Concentrating sunlight, 17th century
  7. Comet of 1811, 19th century artwork
  8. Circulatory system and brain, artwork
  9. Circulatory system and brain, artwork
  10. Cingulate gyrus in the brain, artwork
  11. Chloroform analysis, 19th century artwork
  12. Chinese compass, 18th century manuscript
  13. Cardiovascular system, artwork
  14. Cannabinoid receptor binding, artwork
  15. Bronchial tree and lungs, artwork
  16. Brain, artwork
  17. Brain, artwork
  18. Brain coral, artwork
  19. Brain antomy, 19th century artwork
  20. Blood vessels and kidneys, artwork
  21. Blood types, conceptual image
  22. Blood spectra, 19th century artwork
  23. Blood cells in blood vessel, artwork
  24. Bacterial lung infection
  25. Araticum ape, annona montana, artwork
  26. 15th century surgical equipment, artwork
  27. Australopithecus afarensis, artwork
  28. Wave energy
  29. Water ripples
  30. Vitamin C molecule
  31. Torus
  32. Torus
  33. Subatomic particles abstract
  34. Spintronics research, STM
  35. Spatial dimensions, conceptual artwork
  36. Ribozyme molecule
  37. Rhodopsin protein molecule
  38. Quark structure of silicon atom nucleus
  39. Protein tyrosine phosphatase molecule
  40. Polymer molecular structure
  41. Peony flowers
  42. Optical pattern
  43. Nuclear fusion reactions
  44. Molecular structure
  45. Molecular model
  46. Microglobulin protein, molecular model
  47. Metabolic enzyme, artwork
  48. Medicinal plants