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  1. 5g electron orbitals
  2. Barreal Blanco - USGS Earth as Art
  3. Rubber and gutta-percha molecular models
  4. Mushroom Chart III
  5. Quark structure of silicon atom nucleus
  6. Robot arm picks tray of DNA-containing bacteria
  7. Artwork of Mars Polar Lander descending onto Mars
  8. Row of spectrophotometer cells
  9. Atom, artwork
  10. Placing of electrodes for ECG, artwork
  11. Breast cancer cells, SEM
  12. Early video phone system, 1930
  13. 3D rendering of a Velociraptor dinosaur skeleton, side view
  14. Woman holding ultrasonograph photo of baby
  15. Heart
  16. Early telephone, historical artwork
  17. Organic synthesis
  18. Artwork of structures within a human nerve
  19. Structure of a human heart, artwork
  20. Cell division
  21. A Relative
  22. Estimated Number Of Known Living Species
  23. Tibetan cosmology, 18th century artwork
  24. Brain meninges
  25. Bears
  26. Brain with skull in situ - lateral view. nervous system
  27. Artwork of the structure of the front of an eye
  28. The sun sets behind a row of spinning windmills or wind turbines
  29. Colorized scanning electron micrograph of filamentous Ebola virus particles
  30. Cobalt chloride crystals magnified 40x
  31. HIV virus particles, artwork
  32. Osteoporosis
  33. Anterior neck and facial muscles of the human head (with labels)
  34. 5s electron orbital
  35. The Sun
  36. Illustration of a calculus or stone in the kidney
  37. Lie detector test
  38. Medical testing
  39. Upper body bones, computer artwork.
  40. Anaerobiospirillum thomasii flagella, TEM
  41. Hughes' printing telegraph
  42. Myelination of nerve fibres, TEM
  43. Wire Frame Render of a Clock Mechanism, Close-up
  44. Microscopic view of Penicillium expansum
  45. Streamer chamber photo of pi-mu-e decay
  46. Pseudomonas aeruginosa bacteria, SEM
  47. Sir Isaac Newton, British physicist
  48. Waves on a white dwarf star