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Table 1 Characteristics of the aEPEC strains studied.

From: Invasiveness as a putative additional virulence mechanism of some atypical Enteropathogenic Escherichia colistrains with different uncommon intimin types

Strain Serotype Intimin Type Adherence pattern FAS test
     HeLa cells T84 cells
0621-6 ONT:H- σ * LA + +
1551-2 ONT:H- ο LA + +
1632-7 O26:H- upsilon; ** DA + +
1871-1 O34:H- θ2 ** LAL + +
4051-6 O104:H2 ο AA + +
4281-7 O104:H- τ** LAL + +
E2348/69 O127:H6 α1 LA + +
  1. Adhesion pattern detected on HeLa cells: localized adherence (LA), localized adherence like (LAL), aggregative adherence (AA) and diffuse adherence (DA) (Vieira et al., 2001). (*) Strains that had eae gene sequenced in this study and (**) strains that carry new intimin subtypes (GenBank accession numbers: 1871-1 (FM872418); 4281-7 (FM872416) and 1632-7 (FM872417).