Assertion: cysteine | /r/HasProperty | rare
Facets:
value: in foodstuffs
type: LOCATION
value: relatively
type: DEGREE
Source sentences:
text: Provision of this amino acid is the rate-limiting factor in glutathione synthesis by the cells since cysteine is relatively rare in foodstuffs and furthermore, if released as the free amino acid, is toxic and spontaneously catabolized in the gastrointestinal tract and blood plasma.