Figure 1: Detection of an organophosphorus degradation (opd)gene by PCR amplification of total cellularDNA extracted from bacterial samples. Primer sequences are based on those utilizedby Sprenger et al. and include F196, F450, R757 and R840 [23]. Lane 1: 1 KB Promega molecular ladder. Lane 2: Primer pair 196-757 and expected product band of 580 bp. Lane 3: Primer pair 196- 840 and expected product band of 663 bp. Lane 4: Primer pair 450-757 and expected product band of 308 bp. Lane 5: Primer pair 450-840 and expected product band of 391 bp.