| Gene | Primer sequence | Annealing tempt | PCR products |
| GSTM1 | F-5’-GAACTCCCTGAAAA GCTAAAGC-3’ | 58˚C | 215 bp |
|
| R-5’-GTTGGGCTCAAATA TACGGTGG-3’ |
|
|
| GSTT1 | F-5’-TTCCTTACTGGTCCT CACATCTC-3’ |
| 480 bp |
|
| R-5’-TCACGGGATCATGGCC AGCA-3’ |
|
|
| CYP1A1 | F-5’-GAACTGCCACTTCAGCTGTCT-3’ |
| 312 bp |
|
| R-5’-CAGCTGCATTTGGAAGTGCTC-3’ |
|
|