Table 3. Adhesion of E. coli to IPEC-J2.

	<0.1	0.1<x<1.0	1.0<x<5.0	>5.0
	bacteria	bacteria	bacteria	bacteria
	per cell	per cell	per cell	per cell
domestic pig E. coli (n = 104)
after 2 h incubation	20*	70	8	6
after 6 h incubation	1	14	72	17
wild boar E. coli (n = 93)
2 h	25	63	1	4
6 h	8	28	47	9
all E. coli (n = 197)
2 h	45	133	9	10
6 h	9	42	119	26

Comparison between 2 h and 6 h incubation; classification according to adhesion rate (number of all EPEC bacteria present on IPEC-J2 cells)

^*number of strains which adhered with less than 0.1 bacteria per one epithelial cell.