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types of mrna carriers. viral vectors utilize modified forms of viruses such as retrovirus to encapsulate and deliver mrna. lipid-based vectors use amphiphilic lipids with positive charge which can bind and stabilize mrna. block-copolymer consisting of peg and cationic polymer is used to form structures that can stabilize the mrna in the core of the vector. hybrid vector systems consist of different classes of materials to take the advantageous aspects of each material.
