Figure 5.

 Inducible nitric oxide synthase (iNOS) and 3-nitrotyrosine protein expression levels in tumours and non-tumour tissues in wild-type mice. iNOS and 3-nitrotyrosine protein expression levels were determined by western blot analysis. Mean (SEM) values are shown. (A) iNOS and 3-nitrotyrosine proteins were identified in non-tumour (NT), adenoma (AD), and adenocarcinoma (AC) tissue homogenates from wild-type mice. (B) iNOS expression was significantly higher in AD and AC compared with NT tissues (p<0.05). (C) The amount of 3-nitrotyrosine protein in AD and AC tissue homogenates was significantly higher than that in NT tissues (*p<0.05).