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  1. Crystal
  2. Cryptosporidiosis, TEM
  3. Computer artwork of a beryllium atom
  4. Conceptual image of DNA
  5. Bones of right leg - anterior view. skeletal system
  6. National Radio Astronomy Observatory, Green Bank, West Virginia
  7. The musculoskeletal system
  8. Internal view of the human heart
  9. Universal harmony, 17th century artwork
  10. DNA autoradiogram, artwork
  11. Nerve cell, computer artwork
  12. Northern Norway - USGS Earth as Art
  13. Printing Press
  14. Nasmyth's steam hammer, artwork
  15. Lumbar vertebra
  16. Oregon, Owyhee River Valley. Close-up of Morrisonite Jasper
  17. Alaska - USGS State Mosaic
  18. Oral Streptococcus Bacteria, SEM
  19. Nerve synapse, artwork
  20. Indian mustard seedling (Brassica juncea)
  21. Calabai-yau manifolds
  22. The Syrian Desert - USGS Earth as Art
  23. The bones of the neck
  24. Houdini Diver Suit
  25. Human head with bone, muscles and circulatory system
  26. Paramecium protozoa, light micrograph
  27. Legionella bacteria
  28. Neural network, computer artwork
  29. Cartilage cells, TEM
  30. A Group Of Argentinosaurus Dinosaurs With Ornithocheirus Flying Overhead
  31. Glacial sand deposit
  32. 1770 Cuvier Maastricht Mosasaur
  33. Light passing through prism
  34. Oscilloscope showing voltage/time trace
  35. Pylons in a rural landscape at dusk
  36. Cross section biomedical illustration of pulp and root abscess in molar
  37. DNA sequences
  38. Electromagnetic spectrum, artwork
  39. Ulcerative colitis, SEM
  40. Molecular properties of different liquids
  41. Liesegang patterns
  42. The docking of SpaceX Dragon to the International Space Station above Earth
  43. Thumb print
  44. China, Guangxi, Guilin, Dragon's Backbone rice terraces, Longji, Longsheng
  45. Microscopic view of Giardiasis
  46. Arterial supply and venous drainage of the organs.
  47. Generalized Flower And Arrangement Of Floral Parts At The Flower's Base
  48. Soap bubbles