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  1. Antihistamine drug crystals, SEM
  2. A Herd Of Centrosaurus Dinosaurs
  3. Close-up of beakers containing colored liquid
  4. TEM of Bordetella pertussis bacteria
  5. Gallstone
  6. Diagram illustrating muscle groups on back of human legs
  7. Limescale, SEM
  8. Cardiovascular scan
  9. Giant Panda
  10. Woven fabric fibres, SEM
  11. Earth's atmosphere and solar radiation
  12. Cell
  13. Cluster of DNA strands
  14. Transition Element Salts In Solution
  15. Vegetation Profile Of A Boreal Forest
  16. Historical medicinal products
  17. Dinosaur Skeleton, 1921
  18. Water wheel
  19. Banded sandstone rock
  20. Galileo thermometer
  21. Frogs and their Eggs
  22. 1835 Maneless Indian Lion by Edward Lear
  23. Musculature and mucosa of the small intestines
  24. Dental equipment
  25. Perpetual motion machine, 19th century
  26. Rituximab drug molecule
  27. Rock formation and erosion cycle
  28. Rising Air Under Stable Conditions
  29. Conceptual image of influenza causing flu
  30. Art of pulmonary tuberculosis with lung cavities
  31. Langley's sunspot observation, 1873
  32. Marsupials
  33. Velociraptor
  34. Penicillin magnified 600x
  35. Scanning electron micrograph of just-divided HeLa cells
  36. Ceratosaurus
  37. Muscles of the foot
  38. Lake Disappointment - USGS Earth as Art
  39. Body Plans of Extinct Reptiles
  40. Microscopic view of chromosome
  41. Pharynx sagittal section
  42. Ichthyosaurus and Pleisiosaurus, artwork
  43. Spinal cord anatomy, 1844 artwork
  44. Pt. Reyes
  45. Intestinal microvilli, SEM
  46. Breast cancer cell, SEM
  47. Variety Of Flasks
  48. Anatomy of human pancreas, with labels