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  1. Scanning electron micrograph of a human T cell
  2. Typical Animal Cell and Plant Cell
  3. Glial cells, confocal light micrograph
  4. Volvox colony, light micrograph
  5. Multiphoton fluorescence image of HeLa cells
  6. Mitochondria, TEM
  7. Scanning electron micrograph of a human neutrophil ingesting MRSA
  8. Laboratory vessels on drying rack
  9. Cell
  10. Cell
  11. Scanning electron micrograph of Staphylococcus and a dead human neutrophil
  12. Conceptual image of mitosis
  13. Conceptual image of neuron
  14. Bracken rhizome, light micrograph
  15. Cardiac muscle, TEM
  16. Plant cell
  17. Embryo development 24-36 hours after fertilization
  18. Lung cells, fluorescent micrograph
  19. Human anatomy showing deep muscles in the neck and upper back
  20. Castor oil stem, light micrograph
  21. Stem cells, artwork
  22. Scanning electron micrograph of HIV particles infecting a human H9 T cell
  23. Cell
  24. Mitochondrion, TEM
  25. Escher's Blue Butterfly
  26. Cardiac muscle and capillary, TEM
  27. Confused Flour Beetle Adult, SEM
  28. Microscopic view of human B-cells
  29. Conceptual image of neuron
  30. Cell
  31. Cannabinoid receptor binding, artwork
  32. Colon blood vessels, light micrograph
  33. Conceptual image of DNA
  34. Cell
  35. Evolution of life, artwork
  36. Human blood cells, SEM
  37. Synapses, artwork
  38. Dandelion plant stem, light micrograph
  39. ATP Synthase Enzyme Complex, Illustration
  40. Pond life
  41. Microscopic view of bacteria
  42. Buttercup stem, light micrograph
  43. Cell
  44. Muybridge Motion Study, 1870s
  45. Sickle cell anaemia
  46. Cardiac muscle, TEM
  47. Leukemia blood cells, light micrograph
  48. Male Hercules Beetle