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  1. Human skull
  2. Woven fabric fibres, SEM
  3. Transition Element Salts In Solution
  4. Giant Panda
  5. Earth's atmosphere and solar radiation
  6. Steroid use, conceptual image
  7. Close-up of beakers containing colored liquid
  8. Early astronomical spectroscopy
  9. TEM of Bordetella pertussis bacteria
  10. Earth at time of Pangea
  11. Dinosaur Skeleton, 1921
  12. Gallstone
  13. Vegetation Profile Of A Boreal Forest
  14. Water wheel
  15. Cardiovascular scan
  16. Rock formation and erosion cycle
  17. Cluster of DNA strands
  18. Historical medicinal products
  19. Frogs and their Eggs
  20. Galileo thermometer
  21. Banded sandstone rock
  22. Lake Disappointment - USGS Earth as Art
  23. Perpetual motion machine, 19th century
  24. Mouth and throat nerves, 1844 artwork
  25. DNA analysis
  26. 1835 Maneless Indian Lion by Edward Lear
  27. Art of pulmonary tuberculosis with lung cavities
  28. Musculature and mucosa of the small intestines
  29. Marsupials
  30. Rising Air Under Stable Conditions
  31. Penicillin magnified 600x
  32. Rituximab drug molecule
  33. Velociraptor
  34. Visualisation of quark structure of silicon
  35. Conceptual image of influenza causing flu
  36. Ganges River Delta - USGS Earth as Art
  37. Langley's sunspot observation, 1873
  38. Pharynx sagittal section
  39. Work the Night Shift on Martian Moon Phobos
  40. Microscopic view of chromosome
  41. Trabeculae carneae in the heart, SEM
  42. Artwork of tooth showing periodontal disease
  43. Intestinal microvilli, SEM
  44. Pt. Reyes
  45. Glass bottles
  46. Breast cancer cell, SEM
  47. Body Plans of Extinct Reptiles
  48. Variety Of Flasks