Mucosa-Associated Escherichia coli in Colorectal Cancer Patients and Control Subjects: Variations in the Prevalence and Attributing Features

Table 2

Phylogroups distribution of E. coli isolates according to specimen origins.

Specimen types	Number (%) of E. coli strains in various phylogenetic groups
	A	B1	B2	D	E	F
CRC patients	9 (13.9)	5 (7.7)	24 (36.9)	27 (41.5)	0 (0)	0 (0)
Control group	16 (38.1)	8 (19)	5 (11.9)	7 (16.7)	4 (9.5)	2 (4.7)

65 E. coli strains were obtained from 50 CRC patients; 42 E. coli strains were obtained from 50 control group subjects.