Expression of p-STAT3 and vascular endothelial growth factor in MNNG-induced precancerous lesions and gastric tumors in rats

Figure 3 Expression of p-signal transducer and activator of transcription 3 and vascular endothelial growth factor in the model groups. A: The expression of p-signal transducer and activator of transcription 3 (STAT3) measured by immunohistochemistry. From a normal sample to samples with tumor induced by the administration of N-methyl-N'-nitro-N-nitrosoguanidine, the expression of p-STAT3 was more obvious; B: Similar results for the expression of vascular endothelial growth factor were observed.