CAT and colon mucinous adenocarcinoma: CAT activity was significantly higher in tumour tissue in patients with adenocarcinoma compared to those with mucinous adenocarcinoma (p < 0.05) (Figure 5A) as well as in patients with inflammatory infiltration both in tumour front and tumour centre, assessed as moderate and strong as opposed to absent and weak (p < 0.05, p < 0.05) (Figure 5B,C).