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Pathogen - Wikipedia
What is a Pathogen? 4 Types and How They Spread Disease - Healthline
Pathogens: Definition, types, diseases, prevention, and more
Q&A: What are pathogens, and what have they done to and for …
Pathogen Definition and Examples - Biology Online Dictionary
Pathogens: Types and How to Defend Against Them - Verywell Health
All About Pathogens: Bacteria, Viruses, and More - WebMD
Introduction to Pathogens - Molecular Biology of the Cell - NCBI …
Types of Pathogens and Their Effects on Human Health
What Are the Five Pathogens? - MedicineNet