Adherence of L. amylovorus strains to IPEC-1 cells. A) The adherence of 3H-labeled L. amylovorus strains (A600nm = 0.25) to IPEC-1 cells grown on Thincert™ wells showing the means and standard deviations of 3–7 independent experiments, each with three technical replicates. B) An example of the adherence of L. amylovorus DSM 16698, GRL 1112, GRL 1115 and GRL 1118 to IPEC-1 cells as the function of cell density. The means of three technical replicates from one representative experiment are shown. Dpm, disintegrations per minute.