TABLE 1.

Effect of cholesterol on the measured diffusion coefficients and resultant membrane transit times

	kq	D (quencher)	Transit time
	m-1 s-1	cm2 s-1	μs
DPPC	3.07 × 109	6.76 × 10-6	1.48
DPPC + 30% cholesterol	2.25 × 109	4.95 × 10-6	2.02
DMPC	5.06 × 109	1.11 × 10-5	0.89
DMPC + 30% cholesterol	3.61 × 109	7.95 × 10-6	1.25