Figure 1.

Screening of soybean products for foreign transgenes. DNA was isolated from the non-GM, GM-1, and GM-2 soybeans. The foreign transgenes were amplified using PCR for the P35S, the Tnos, the T35S, the lectin gene, the cp4 epsps gene, the pat gene, the cry1Ab/cry1Ac, the dmo gene, the gm-hra gene, the csr1-2 gene, the Pj.D6D gene, and the 2mepsps gene. The detection limit was 0.1%. H is for ddH2O, N is for non-GM soybean, M is for DNA ladders, P₁ is for 0.1% reference material of GM soybean, and P₂ is for 0.01% reference material of GM soybean.