Bacterial DNA amplification was done in 20μl reaction mixture containing 2μl of 10X Taq DNA polymerase buffer (containing 100mM Tris with PH 9.0, 500mM KCl, 15mM MgCl and 1% Triton X-100), 2μl of 10mM of dNTP mixture, 0.9U of Taq DNA polymerase (Genei), 2μl of each of 4 pmoles/μl of forward and reverse primers and 5μl of crude bacterial cell lysate.