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  1. Scanning electron micrograph of a human T cell
  2. DNA sequences
  3. Multiphoton fluorescence image of HeLa cells
  4. Scanning electron micrograph of a human neutrophil ingesting MRSA
  5. Colour blindness test
  6. Laboratory vessels on drying rack
  7. Scanning electron micrograph of Staphylococcus and a dead human neutrophil
  8. Conceptual image of mitosis
  9. Virus particles entering cells, artwork
  10. Scanning electron micrograph of HIV particles infecting a human H9 T cell
  11. DNA
  12. Colorized image of HIV-infected H9 T-cell
  13. Conceptual image of DNA
  14. Microscopic view of DNA
  15. Stem cell, light micrograph
  16. Virus particles, conceptual artwork
  17. Sickle cell anaemia
  18. Scanning electron micrograph of HIV particles infecting a human T cell
  19. Conceptual image of DNA
  20. Leukemia cells, TEM
  21. T Lymphocyte And Cancer Cell, SEM
  22. DNA Sequencing Gel, Close-Up
  23. Conceptual image of DNA
  24. Close-up of the structure of DNA
  25. Barbara McClintock, in her laboratory at Cold Spring Harbor, New York, in 1947
  26. Forensic evidence
  27. Scanning electron micrograph of an apoptotic HeLa cell
  28. Helix model of DNA made up of pills
  29. Conceptual image of DNA
  30. Avian flu virus, TEM
  31. Virus particles, artwork
  32. Gene therapy: model of DNA inside a drug
  33. DNA
  34. Cloning research
  35. Conceptual image of DNA
  36. Breast cancer cells, SEM
  37. Colorized scanning electron micrograph of filamentous Ebola virus particles
  38. DNA sequences
  39. HeLa cells, light micrograph
  40. Conceptual image of DNA
  41. Microscopic view of immunoglobulin G antibodies
  42. Illustration of arthritis sites on the body
  43. Virus, artwork
  44. Conceptual image of DNA
  45. Cluster of DNA strands
  46. Scanning electron micrograph of just-divided HeLa cells
  47. Microscopic view of chromosome
  48. Breast cancer cell, SEM