Fig. 1.

a) Chemical structure of a series of ssPalm (ssPalmM, ssPalmO, and ssPalmL). The ssPalms used in the present study contained myristic acid, oleic acid or linoleic acid as a fatty acid scaffold. The synthesis of the ssPalmO and ssPalmL was described in Supplementary materials. b) Size distribution of the LNP_ssPalms prepared by ethanol dilution method. The size distribution was determined by dynamic light scattering. Detailed particle data were summarized on Table 1.