Research Article

Tumorigenicity and Validity of Fluorescence Labelled Mesenchymal and Epithelial Human Oral Cancer Cell Lines in Nude Mice

Figure 5

(a) H&E staining of a UM1 tumor. (A) An invasive cancer pattern is shown at the front (black arrows, magnification 100x) of UM1 derived cancer tissue. (B) Poor cell differentiation is observed within the tumor specimen (magnification 200x). (b) H&E staining of a UM2 tumor. (A) A well-defined border to the surrounding tissue is visible (black arrows, magnification 100x). (b) The cancer tissue is well differentiated (magnification 200x).