Figure 1. Immunohistochemistry analysis of the original patient tumors compared with patient-derived xenografts PDOX and PDHX.

Images of H&E, p53, C-erbB-2, and DPC4 staining of patient–PDXs pairs. A–D refer to patient sets No. 1, 7, 16, and 25, respectively. (Size bar : 20 μm).