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  1. Pathogen - Wikipedia

  2. What is a Pathogen? 4 Types and How They Spread Disease - Healthline

  3. Pathogens: Definition, types, diseases, prevention, and more

  4. Q&A: What are pathogens, and what have they done to and for …

  5. Pathogen Definition and Examples - Biology Online Dictionary

  6. Pathogens: Types and How to Defend Against Them - Verywell Health

  7. All About Pathogens: Bacteria, Viruses, and More - WebMD

  8. Introduction to Pathogens - Molecular Biology of the Cell - NCBI …

  9. Types of Pathogens and Their Effects on Human Health

  10. What Are the Five Pathogens? - MedicineNet