GLUL and colorectal carcinoma: DNA coding for 16S rRNA was detected in 256 (64.5%) CRC patients and 5 (15.6%) healthy controls (p < 0.001); β-galactosidase gene of E. coli was detected in 104 (26.2%) CRC patients and 5 (15.6%) controls (p = 0.186); glutamine synthase gene of B. fragilis was detected in 220 (55.4%) CRC patients and in 0 (0%) controls (p < 0.001); whereas, DNA coding for 5.8S rRNA of C. albicans was detected in 230 (57.9%) CRC patients and in 0 (0%) controls (p < 0.001) (Table 2 and Data S1).