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  1. Fertilisation, artwork
  2. Pt. Reyes
  3. Insulin molecule
  4. Great Auk (Pinguinus impennis), engraving
  5. Staphylococcus epidermidis bacteria
  6. Illustration of lung bronchioles and alveoli
  7. Plant pore, SEM
  8. Trabeculae carneae in the heart, SEM
  9. Insect microscopy, 19th century
  10. Stegosaurus
  11. Electron orbitals
  12. Anatomy of human pancreas, with labels
  13. HIV particles, TEM
  14. Leaf midrib, SEM
  15. Sperm production, SEM
  16. Skin section, SEM
  17. Heart and neck blood vessels
  18. Hunting sabre-toothed cat
  19. Utility pipes, artwork
  20. Back of brain and spinal cord with head in dark cloud indicating depression
  21. DNA sequence on a computer monitor screen
  22. Railway carriages
  23. Science classroom
  24. Human Skin
  25. X-ray of human and chimpanzee skulls
  26. Used interdental brush, SEM
  27. Charles Darwin, British naturalist
  28. Anatomy of female reproductive system
  29. 3D Mandelbrot fractal. Computer-generated image derived from a Mandelbrot Set.
  30. Cervical smear slides
  31. Chemistry beakers and stack of books
  32. xDNA molecule
  33. Transverse section of an artery. cardiovascular system, circulatory system
  34. That Dam Cloud
  35. Apatosaurus
  36. Vegetation Profile Of A Savanna
  37. Morphine crystals, SEM
  38. Elastic cartilage, SEM
  39. Current melting steel wool
  40. Jordan - USGS Earth as Art
  41. Woman's eye
  42. Brain coral, artwork
  43. The arteries of the brain
  44. Pea flower pollination, SEM
  45. Female skeleton, artwork
  46. Ader's flying machine, 19th century
  47. Nedoceratops dinosaur, artwork
  48. Euoplocephalus