Assertion: ligand's receptor | /r/HasProperty | exposed to excessive amount of a ligand
Facets:
value: from endogenous mediators
type: OTHER
value: from from
type: OTHER
value: chronically
type: MANNER
Source sentences:
text: Downregulation of receptors can also occur when receptors have been chronically exposed to an excessive amount of a ligand, either from endogenous mediators or from exogenous drugs.