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. Author manuscript; available in PMC: 2011 Aug 1.
Published in final edited form as: Free Radic Biol Med. 2010 May 15;49(3):487–492. doi: 10.1016/j.freeradbiomed.2010.05.007

Fig. 1. Chimeric Ahr promoter constructs.

Fig. 1

The four Sp1 binding sites in the AhR promoter region are indicated by solid bars. The arrow indicates the major transcription initiation site. For simplification, the bar furthest upstream of the transcription initiation site is designated as the first Sp1-binding site, and others are numbered consecutively towards the initiation site.