Visualization of 12 PCR assays with silver stained 8% polyacrylamide gel, showing the expected <i>S. mansoni</i> 110 bp DNA fragment in positive urine samples.

<p>NC: negative control; L: 100 bp Ladder; PC: positive control; lines 2, 3, 4, 5, 6, and 7: <i>S. mansoni</i> positive urine samples; lines 1, 8, 9, and 10: <i>S. mansoni</i> negative urine samples.