TABLE 1.

Composition of the diets

Ingredientsa	Diet
	SAA Def.	0.5% OTC	Std Chow
l-Alanine	5.2	4.2	11.0
l-Arginine HCl	12.1	12.1	10.0
l-Asparagine	6.0	5.0	0.0
l-Aspartic acid	5.2	4.2	14.0
l-Glutamic acid	40.0	40.0	34.0
Glycine	26.0	26.0	8.0
l-Histidine HCl	4.5	4.5	4.0
l-Isoleucine	8.2	8.2	8.0
l-Leucine	11.1	11.1	18.0
l-Lysine HCl	18.0	18.0	9.0
l-Phenylalanine	7.5	7.5	10.0
l-Proline	3.5	3.5	16.0
l-Serine	5.2	5.2	11.0
l-Threonine	8.2	8.2	7.0
l-Tryptophan	1.8	1.8	2.0
l-Tyrosine	5.0	5.0	6.0
l-Valine	8.2	8.2	9.0
l-Cysteine	0.0	0.0	3.0
l-Methionine	0.0	0.0	4.0
OTC	0.0	5.0	0.0
Carbohydrates	652.0	650.0	442.0
Fats	80.0	80.0	62.0
Fibers	34.0	34.0	35.0
Minerals	43.2	43.2	35.4
Vitamins	13.0	13.0	12.5

Diets were purchased from Harlan-Teklad. SAA def. and 0.5% OTC diets were custom-made amino acid- defined diets. Std chow was an 18% protein rodent diet from natural sources.

^aAmino acid profile and other ingredients in the diets are presented as g/kg of dry weight diet.