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  1. Art of gastro-oesophageal reflux in hiatus hernia
  2. Arm bones
  3. Apollonius of Perga, Greek mathematician
  4. Antibiotic cell membrane effect, artwork
  5. Angina pectoris
  6. Alveoli
  7. Albert Einstein, physicist
  8. Alan Turing, British mathematician
  9. Acupuncture points
  10. Abdominal organs
  11. Wormhole, conceptual artwork
  12. Woolly mammoths
  13. Woolly mammoth, 19th century artwork
  14. Water clock, design from 1646
  15. Virus, artwork
  16. Virus particles, conceptual artwork
  17. Virus particles, artwork
  18. Violin, 17th century artwork
  19. Velociraptor
  20. Variety of Cranesbill
  21. Universal harmony, 17th century artwork
  22. Tyrannosaurus rex
  23. Tuberculosis Transfusion, 19th Century
  24. Triceratops
  25. Synapses, artwork
  26. Suchomimus dinosaur, artwork
  27. Structure of a human heart, artwork
  28. Stonehenge, 17th century artwork
  29. Stem cells, artwork
  30. Spine anatomy, artwork
  31. Spinal cord anatomy, 1844 artwork
  32. Spinal cord anatomy, 1844 artwork
  33. Sorghum (Sorghum bicolor), artwork
  34. Silurian landscape, artwork
  35. Shell geometry, 16th century artwork
  36. Sea Holly (Eryngium x oliverianum)
  37. Santorini eruption, 1866
  38. Retina in glaucoma, artwork
  39. Railway signalman, 19th century
  40. Proso millet (Panicum miliaceum), artwork
  41. Primula auricula 'Monk'
  42. Potato (Solanum tuberosum)
  43. Platelet, artwork
  44. Phonetic Egyptian hieroglyphs
  45. Paranthropus robustus
  46. Paracelsus and the Basel tribunal
  47. Nose nerves and vessels, 1844 artwork
  48. Newton's optics