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. 2015 Nov 18;5:16214. doi: 10.1038/srep16214

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(a,b) Immunofluorescence staining of ProCA1.GRPR targeting to GRPR on H441 (a) and PC3 tumors (b) in xenografted mice. The red color indicates the staining of ProCA1.GRPR while the blue color represents nucleus staining. Insert: Immunohistochemistry staining of GRPR expression on H441 (a) and PC3 tumor (b) from xenografted mice. In comparison with H441 tumors, GRPR shows stronger expression (brown color) on PC3 tumor. (c) Fluorescence intensity of ProCA1.GRPR staining in PC3 and H441 tumors. Data are expressed as mean ± s.d. Scale bar = 100 μm. The images a-c are representatives of three independent experiments.