each diet contained eight indispensable amino acids , cystine and tyrosine proportioned as in casein and a different mixture of dispensable nitrogen : a ) six dispensable amino acids plus argine ( diet 1 ) or plus histidine and arginine ( diet 2 ) in the casein pattern , or b ) an isonitrogenous amount of glycine and diammonium citrate alone ( diet 3 ) , with histidine ( diet 4 ) , with arginine ( diet 5 ) or with histidine and arginine ( diet 6 ) .
C0002520
amino acids
C0017890
glycine