Fig. 1From: Genetic polymorphisms of human cytochrome P450 CYP1A1 in an Egyptian population and tobacco-induced lung cancer2% agarose gel illustrating the amplification of CYP1A1 gene in two patients. Lanes 1 and 6: amplification of exon 1 (1153-bp). Lanes 2 and 7: amplification of exon 2 (1180-bp). Lane 3 and 8: amplification of exons 3–6 (1233-bp). Lanes 4 and 9: amplification of exon 7a (349-bp). Lanes 5 and 10: amplification of exon 7b (1330-bp). M: Size marker (PhiX174 DNA/HaeIII digest)Back to article page