Comparison of transfer efficiencies in the presence and absence of rafts. • are from bPC bilayers in multilamellar liposomes in the absence of cholesterol and at a dye concentration of 0.5% in bPC, with a donor of NBD-DPPE or NBD-DOPE and an acceptor of Rh-DOPE. □, bPC/bSM (1:1), 35% cholesterol, 0.5% NBD-DOPE/Rh-DOPE. ▵, bPC/bSM (1:1), 35% cholesterol, 0.5% NBD-DPPE/Rh-DOPE.