Assertion: extracellular digestion | /r/CapableOf | work as buffer
Facets:
value: for the ph of the mouth
type: TRANSITIVE-OBJECT
Source sentences:
text: It also works as a buffer for the pH of the mouth, as well as plays an important role in protecting the body against pathogens, due to the presence of IgA antibodies in it (also present in tears, the colostrum, mother’s milk and in the mucosae of the intestine and airways).