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