MSLN and neoplasm: The mouse treated with MSLN scFv-LGA-PEI/miR-520h mimics NPs showed stronger red fluorescence in the PAN3 tumor than that treated with the LGA-PEI/miR-520h mimics NPs did, indicating MSLN scFv-LGA-PEI can deliver more RNA into the tumor tissue with high MSLN expression than LGA-PEI does (Figure 7B).