“…We found that Figure 1D , “Gel retardation assay of naked siRNA and MWNT/Sor/siRNA complexes with the different N/P ratio,” is a duplication of the previously published Figure 2A, “Gel retardation assay of naked pDNA and SLNs/pDNA complexes with the different mass ratio” [ 1 ]. In addition, external duplications include images of immunohistochemical staining of Ki67 in Figure 5D, which duplicates Ki67 images in [ 2 ], and tumor images in Figure 5C , which are identical to some of the tumor images in [ 3 , 4 ]. This figure also contains internal duplications produced by the repeated use of tumor specimens.…”