TABLE 1.

Compositions of four isocaloric custom rodent diets

Dieta	Amt of component (g/kg)
	Casein	L-Cysteine	L-Arginine- HCl	Cornstarch	Maltodextrin	Sucrose	Soybean oil	Cellulose (fiber)	Mineral mix, AIN- 93G-MX	Calcium phosphate monobasic	Calcium carbonate	Vitamin mix, AIN- 93-VX	Choline bitartrate	TBHQ (antioxidant)	Vitamin E acetate (500 U/g)	Stay-C 35b	Food color (soluble)
HH	275.9	4.14	9.37	303.09	132	100	70	50	35		2.31	12	2.5	0.01	0.72	2.86	0.1
HL	275.9	4.14	9.37	306.67	132	100	70	50	35		2.31	12	2.5	0.01			0.1
LH	160.92	2.41	2.46	426.88	132	100	70	50	35	2.02	0.12	12	2.5	0.01	0.72	2.86	0.1
LL	160.92	2.41	2.46	430.46	132	100	70	50	35	2.02	0.12	12	2.5	0.01			0.1

^aHH, 24% protein, 0.5% l-cysteine, 2.0% l-arginine, 450 IU α-tocopherol/kg, and 0.1% l-ascorbate; HL, 24% protein, 0.5% l-cysteine, 2.0% l-arginine, and 90 IU α-tocopherol/kg; LH, 14% protein, 0.3% l-cysteine, 0.9% l-arginine, 450 IU α-tocopherol/kg, and 0.1% l-ascorbate; LL, 14% protein, 0.3% l-cysteine, 0.9% l-arginine, and 90 IU α-tocopherol/kg.

^bStable form of vitamin C, mainly monophosphate.