Figure 1

Immunostaining of Flot-2 in clinical NPC and NP tissues.
A, Flot-2 showed a diffuse staining pattern with different intensities in metastatic (upper panel) and non-metastatic (lower panel) NPC tissues. B, Flot-2 showed a focal expression pattern at the periphery of NPC nests with no or weak expression in the central areas. C, NP tissues with faint Flot-2 expression. D, NP tissues with negative Flot-2 expression. The histological manifestations shown in Fig. 1 are representative cases.