Assertion: alkaptonuria's urine | /r/CapableOf | darken upon exposure
Facets:
value: to air
type: TRANSITIVE-OBJECT
value: significantly
type: DEGREE
Source sentences:
text: of urine darkening upon standing or exposure to alkaline
text: If you or your child begins to experience signs or symptoms of alkaptonuria – especially urine that darkens significantly after exposure to air as this is often one of the earlier symptoms – schedule an appointment with your physician for evaluation and treatment.