Assertion: immune system's line | /r/HasProperty | physical and chemical barriers
Facets:
Source sentences:
text: The first line of defense in our bodies are physical and chemical barriers - our skin, stomach acids, mucus, tears, vaginal opening, of which the last three mostly produce lysozyme to destroy harmful incoming pathogens.
text: The first line of defense in our bodies are physical and chemical barriers - our skin, stomach acids, mucus, tears, vaginal opening, of which the last three mostly produce lysozyme to destroy harmful incoming pathogens.