Malign tisssue Benign tissue A- 12.1 ± 7.68 10.20 ± 8.30 B- 4.91 ± 3.03 8.90 ± 7.02 C- 5,8 ± 3.5 5,9 ± 3.7 D- 4,6 ± 2.8 4,9 ± 3.0 Statistical evaluation (Wilcoxon test) A-B: 0.026* 0.32 C-D 0.36 0.22

Table 1: Effects of Echinacea extract on ADA activities in cancerous and non-cancerous human gastric (n=33) and colon tissues (n=25) AGastric tissue ADA activity without extract; B-Gastric tissue ADA activity with Echinacea extract; C-Colon tissue ADA activity without extract; D-Colon tissue ADA activity with Echinacea extract *p<0.05 value was evaluated significant n.s Non-significant.