The PCR reaction mixture contained: 200 μM each of
dNTPs; 3.0 mM MgCl2; the concentration of each primer
for E. coli, Y. enterocolitica and A. hydrophila was 0.166,
0.333 and 0.416 μM respectively; 2.5U of thermostable
DNA polymerase and 6 μl (2 μl of each organism) of
template DNA, in a total volume of 30 μl. Amplification
conditions were: 2 min 5 sec at 95°C, 35 cycles of 30 sec
at 94°C, 1 min at 57°C, and 60 sec at 72°C and a final
extension of 5 min at 72°C.