Fig. 6

Ex vivo imaging and IHC staining of EGFR in OC tumors. (A) Ex vivo NIRF imaging of tumor and normal organs in different groups. (B) IHC staining of EGFR protein in OC tumor tissue. Magnification 400×; scale bar, 100 μm. The control groups including PBS, free Cy7 dye and mouse isotype IgG-Cy7 were also used in our previous work [22]. The corresponding images in the control groups in Fig. 6A were reprinted with permission from reference 22. IHC: immunohistochemical; OC: ovarian cancer; NIRF: near-infrared fluorescence; IgG: immunoglobulin G; PBS: phosphate-buffered saline; H&E, hematoxylin-eosin