Fig. (2). Immunoblotting reaction. Line 1: aEPEC OMP extract reacted with policlonal anti-OMP from aEPEC. Line 2: tEPEC OMP extract reacted with policlonal anti-OMP from tEPEC. Line 3: aEPEC OMP extract reacted with a pool of negative control sera. Line 4: tEPEC OMP extract reacted with a pool of negative control sera.