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