Table 2.

ddPCR-measured total 16S rRNA gene copy number in 1 ng of total eDNA for control cases (C) and cancer cases (K) and for distinct endometrial sampling sites, indicated as site_3 and site_12. Values are the averages from triplicate experiments. S.D. is standard deviation. Negative controls gave a zero copy number for the 16S rRNA gene.

	Copies of 16S rRNA Gene/ng of eDNA				Bacterial DNA fg/ng of eDNA
Patients	Site_3	S.D.	Site_12	S.D.	Site 3	Site 12
P8_C	2.8	2.5	1.3	0.6	3.9	1.8
P11_C	1.0	0.9	0.5	0.4	1.4	0.7
P14_C	0.5	0.2	1.6	1.2	0.7	2.2
P15_C	2.1	0.7	2.0	0.8	2.9	2.8
P16_C	1.4	0.3	0.5	0.6	2.0	0.7
P18_C	1.0	0.5	1.3	1.6	1.4	1.8
P2_K	2.1	0.6	1.4	0.7	2.9	2.0
P4_K	1.3	2.3	1.0	0.3	1.8	1.4
P9_K	1.3	1.4	0.8	0.1	1.8	1.1
P10_K	1.1	1.3	0.8	0.7	1.5	1.1
P12_K	2.1	0.6	2.5	0.5	2.9	3.5
P17_K	1.2	1.9	0.6	0.5	1.7	0.8
P19_K	0.7	0.6	0.7	0.1	1.0	1.0
P21_K	1.8	1.2	2.1	1.0	2.5	2.9