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  1. Blood samples
  2. Group of Escherichia coli bacteria cells, known as E. Coli
  3. Blood vessel anatomy
  4. Brontotherium, a family of extinct mammals
  5. Pipes at Nesjavellir Geothermal Power Plant, Iceland
  6. Eden Project
  7. Semicircular canal, diagram
  8. Skull anatomy
  9. Pantometer, 16th Century
  10. Doctor examining MRI scans
  11. Fludd's wind diagram
  12. Artwork: brain frontal areas that control the body
  13. Boring a hole
  14. Antibiotic research
  15. Group of H5N1 virus with glassy view
  16. Viral dUTPase enzyme, molecular model
  17. Computer model of a molecule of vanillin
  18. Growth hormone receptor, molecular model
  19. Orlan spacesuit gloves
  20. Craniofacial surgery approaches
  21. Can evacuated by vacuum pump
  22. Nerve cell, computer artwork
  23. Sleeping sickness parasite
  24. Narrowed coronary artery, artwork
  25. Cochlea cells, SEM
  26. Artwork of eye
  27. DNA autoradiogram
  28. E. coli bacteria
  29. Artwork of intestinal hookworm causing anaemia
  30. Homo antecessor
  31. Arachnid anatomy, artwork
  32. Engraving of the Bullock Rotary Press of 1865
  33. Fire plumes, computer simulation
  34. 5f electron orbitals, cubic set
  35. Doctor's stethoscope
  36. Foot bones and ligaments
  37. Tourmaline
  38. Early Earth, artwork
  39. Viral transfer of bacterial DNA, artwork
  40. Osteoporosis
  41. Young frog at 10 weeks
  42. Transverse section of the midbrain
  43. Human evolution
  44. Winter's bark (Drimys winteri) pollen, SEM
  45. Group 2 metals
  46. Retina with neovascularization
  47. Molecular structure
  48. Dissected eye, 1844 artwork