Table 2.

The similarity of DGGE patterns for the biofilms and the water samples from different types of pipes (the dice coefficient)

Sample	Biofilm			Water phase
	PEXb	HDPEb	PVCb	PEX	HDPE	PVC
PEXb	0
HDPEb	0.5	0
PVCb	0.74	0.63	0
PEX	0.89	0.33	0.71	0
HDPE	0.23	0.78	0.59	0.38	0
PVC	0.74	0.63	0.89	0.71	0.59	0