Assertion: prostaglandin's role | /r/HasProperty | protective
Facets:
Source sentences:
text: One of these is in the stomach lining, where prostaglandins serve a protective role, preventing the stomach mucosa from being eroded by its own acid.
text: The most frequent adverse effect of NSAIDs is irritation of the gastric mucosa as prostaglandins normally have a protective role in the gastrointestinal tract.