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  1. Hepatitis C virus, molecular model
  2. Surface anatomy of the eye, ear and nose
  3. The bones of the forearm
  4. STS-135 Mission
  5. 15th century surgical equipment, artwork
  6. Germination of a maize seed, Zea mays
  7. Surgeon with arms crossed
  8. Greenland Coast - USGS Earth as Art
  9. E. coli bacteria, SEM
  10. The musculoskeleton of the lower limb
  11. New York - USGS State Mosaic
  12. Plant roots
  13. The musculoskeleton of the head and neck
  14. Hornblower's engine
  15. Studio shot of hand holding syringe
  16. Electron orbitals
  17. Desolation Canyon - USGS Earth as Art
  18. Southern Star Chart
  19. Volcanic ash layers in rock
  20. The musculoskeleton of the head, neck and face
  21. Cut-away artwork of a windmill for grinding corn
  22. 1839 Darwin's Falkland Island Fox Extinct
  23. Morse's telegraph receiver
  24. AIDS pneumonia infection, TEM
  25. Rice Terraces, Longsheng Ping'an, Guangxi
  26. Pregnancy, conceptual artwork
  27. Artistic representation of the immune system's reaction to bacteria invading the tissues
  28. South Carolina - USGS State Mosaic
  29. Artwork of cerebral embolism, cause of stroke
  30. Forearm musculoskeleton
  31. Easter cactus stigma, SEM
  32. View Of Venus And Moon From The Surface Of Mars, A Composite Image
  33. Oral Streptococcus Bacteria, SEM
  34. Early Earth, artwork
  35. Nerve cell, computer artwork
  36. Growth hormone receptor, molecular model
  37. Great Barrier Reef - USGS Earth as Art
  38. Cell division in Salmonella bacterium
  39. Macrophoto of drops of mercury in oil
  40. Brachiosaurus
  41. Mount Elgon - USGS Earth as Art
  42. Shetland Islands - USGS Earth as Art
  43. Kidney dialysis
  44. Transition Element Salts In Solution
  45. Syringe
  46. Anatomy of human pancreas, with labels
  47. Rod-shaped bacteria, artwork
  48. Microscopic view of ebola virus