Create a scenario where physical, chemical, and microbiome defenses work together to prevent infection.

Saliva deactivates pathogens, microbiome attacks them, and skin absorbs them.

Skin prevents entry, stomach acid kills pathogens, and intestinal microbiome competes with remaining microbes.

Mucus traps pathogens, tears wash them away, and skin secretes antibodies.

Microbiome produces acids, skin secretes enzymes, and mucus coats pathogens.