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. 2020 Jan 10;7:872. doi: 10.3389/fchem.2019.00872

Figure 9.

Figure 9

Fluidity of liposomes in relation with their lipid structure. Melting temperature Tm of lipids as an indication of fluidity. (A) Melting temperature as a function of unsaturated bond location in (f sn-1 saturated/sn-2 monosaturated phosphatidylcholine) (Nagahama et al., 2007). (B) Melting temperature of 5.0 mM dialkyldimethylammonium bromide in water as a function of the number (n) of carbon atoms in the alkyl chains (Feitosa et al., 2006) (with permission of Elsevier). (C) Transmission electron micrographs of the fusion (indicated by the arrows) of fusogenic, DOPE-DPPC-cholesterol hemisuccinate liposomes with E. coli. Bar marker equals 200 nm (Nicolosi et al., 2010) (with permission of Elsevier). (D) The % fused lipsosomes and % release of fluorescent carboxyfluorescein as a function of the % digalactosyldiacylglycerol (DGDG) in egg phosphatidylcholine (EPC) liposomes (Hincha et al., 1998) (with permission of Elsevier).