fig1

Figure 1. Ethidium bromide-stained agarose gel showing infection status of 10 snails using the schistosoma DraI gene (121 base pair short tandem repeat). Lanes: 1: Quick-Load 100 bp DNA Ladder; 2-4: uninfected snails; 5-7: infected snails; 8 and 11: infection status unresolved; 10: uninfected snail; 12: DNA from adult S. haematobium (positive control); 13: negative control (no DNA).