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Cytotoxicity of cationic amino acid based lipid assemblies, Arg (TFA–), and LA2000 to primary cultured neurons as a function of lipid concentration. After 48 h of exposure with lipids, live neurons were stained and counted (Supporting Information Figure S2). Data are shown as means ± SD (n = 3). Number of surviving neurons is significantly different between Arg (TFA–) and LA2000 (two-way ANOVA, P < 0.01).
