thiazolidine-4-carboxylic acid ( tc ) ( a precursor of intracellular cysteine ) was administered to rats at 50 mg/kg and at 400 mg/kg by an i.p . route and at 800 mg/kg per os , and the levels of glutathione ( gsh ) in gastric mucosa , gastric wall and liver were determined .
C0013153
route
C1527415
per os