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  1. Action of serotonin reuptake inhibitors
  2. Serotonin neurotransmitter molecule
  3. Synapses, artwork
  4. Molecular model
  5. Blood cells in blood vessel, artwork
  6. Virus particles entering cells, artwork
  7. Human skull
  8. Coronary artery disease
  9. DNA replication, artwork
  10. Viral throat infection, artwork
  11. Fertilisation, artwork
  12. Cells
  13. Dendritic cells, artwork
  14. Virus particles, artwork
  15. Retina in glaucoma, artwork
  16. Detached blood clot, artwork
  17. Bacterial lung infection
  18. Toothache, conceptual artwork
  19. Rod-shaped bacteria, artwork
  20. Nerve damage and stem cells, artwork