Figure 1From: Pore forming polyalkylpyridinium salts from marine sponges versus synthetic lipofection systems: distinct tools for intracellular delivery of cDNA and siRNAStructures of transfection reagents and other related molecules of interest. A, polymeric alkylpyridinium salt (poly-APS) a sponge toxin preparation composed of a mixture of two polymeric 1,3-octylpyridinium salts of 5.5 (n = 29 average) and 19 kDa (n = 99 average) sizes. B, N4,N9-dioleoylspermine (LipoGen).Back to article page