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  1. Virus particles entering cells, artwork
  2. Scanning electron micrograph of HIV particles infecting a human H9 T cell
  3. Scanning electron micrograph of HIV particles infecting a human T cell
  4. Avian flu virus, TEM
  5. Virus particles, artwork
  6. Breast cancer cells, SEM
  7. Colorized scanning electron micrograph of filamentous Ebola virus particles
  8. Virus, artwork
  9. Antibiotic mechanism of action, artwork
  10. E. coli bacteria