TABLE 1.

Osmotic pressure	PEG 23%	PEG 25.5%	PEG 35%
	7.6 × 105 Pa	1.00 × 106 Pa	2.35 × 106 Pa
Parameters	a = 111.6 Å	a = 110.9 Å	a = 107.6 Å
	c = 62.0 Å	c = 61.4 Å	c = 58.9 Å
	β = 104°	β = 104°	β = 104°
	dL = 376.5 Å	dL = 374 Å	dL = 358 Å
Concentration CfNCP	278 mg/ml	284 mg/ml	319 mg/ml

Variation of the parameters of the lamellar phase as a function of osmotic pressure, for an added salt concentration of 15 mM. The equilibration time of the samples was 1 month. The initial NCP concentration was 256 mg/ml.