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PCR amplification profile of Cry-type genes using universal specific primers for different native and standard Bt isolates (Lane 1: 100 bp SibEnzyme DNA ladder; Lane 1–21: Isma 1, Tosk 1, Tosk 2, Port 1, Dipel® 2X, Agerin®, Sohg 1, Matr1, Qena 1, Qena 2, Qena 3, R.Sea 1, Asut 1, Asut 2, S.Sinai 1, S.Sinai 2, S.Sinai 3, N.Sinai 1, N.Sinai 2, N.Sinai 3 and HD-635, respectively). A: Cry 1 gene, B: Cry 1B gene, C: Cry 1C gene, D: Cry 2 gene and E: Cry 2A (a,b) gene.
