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SECTION I: MOLECULAR GENETIC ENGINEERING AND BIOCHEMICAL TECHNOLOGY 205(a) (b)Figure 7. Electrophoresis of DNA products (a), PCR products (b) of 3 strains N6 GII4 (well 1), N2 GII14 (well 2), and N1 AIA6 (well 3) on 1% agarose gel, respectively. M: 1 kb Marker ladder of InvitrogenFigure 8. The phylogenetic tree of the three studied bacterial strains.4. DISCUSSIONAccording to some published studies, most anti-cancer active substances are produced from microbial strains with antibacterial activity [11 - 13]. Therefore, in this study, after screening 28 bacterial strains with antibacterial activity and anti-pathogenic yeast, we continued to screen for cancer cell cytotoxicity. The results obtained were similar to some of the published results, however, some strains, in addition to antagonistic activity and cancer