The cysteine flux , its de novo synthesis and release from protein breakdown , and erythrocyte glutathione synthesis rate were measured in @ children with edematous SAM in the fed state by using stable isotope tracers at @ clinical phases as follows : @ @ d ( SE ) -LSB- clinical phase @ ( CP@ ) -RSB- , @ @ d -LSB- clinical phase @ ( CP@ ) -RSB- , and @ @ d ( clinical phase @ ) after admission .