Table 1.

Molar ratios of lipids in each formula.

Formula	DOTAP	Phosphatidylcholine	DMG-PEG	Cholesterol	Palmitic Acid
1	49.5	10	1.5	38	1
2	47.5	10	1.5	36	5
3	45	10	1.5	33.5	10
4	50	10	1.5	28.5	10
5	40	10	1.5	38.5	10
6	50	10	1.5	38.5	0