Table 1.

Composition of the experimental diets

Ingredient	Chow Diet, g/kg	HMD
Casein	200	200
Cornstarch	397.5	382.7
Dextrinized cornstarch	132	132
Sucrose	100	100
Cellulose	50	50
Soybean oil	70	70
Mineral mixture	35	35
Vitamin mixture	10	10
l-cystine	3	3
l-methionine		14.8
Choline bitartrate	2.5	2.5

HMD, 2% high methionine diet. Chow diet and HMD are based on AIN-93G rodent diets. Note: casein contains 5.2 l-methionine.