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(A, B) SEM images of the 5-Fu-ICG-MPEG-PCL@HA MN (The photograph of 5-Fu-ICG-MPEG-PCL@HA MN is inserted). (C) optical micrograph (scale bar:100 μm, the photograph of skin was inserted) and (D) histological sections (scale bar, 100 μm) of the mice skin stained with trypan blue after 5-Fu-ICG-MPEG-PCL@HA MN application.
