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(A) Cytotoxicity of LENA IN PEG AuNPs and LENA@DOX IN PEG AuNPs in PANC-1 cells. (B) Dark-field (left) and bright-field (right) images (20×, 0.25 NA objective) of PANC-1 cell lines treated with the LENA IN PEG AuNPs and LENA@DOX IN PEG AuNPs in different areas (scale bar: 2 μm).
