Cells were incubated for 48 h with 21 anthocyanins (10 µM and 50 µM; i.e. PEO-1, PEO-2, PEL-1, PEL-2, DEL-1, DEL-2, DEL-3, DEL-4, DEL-5, MAL-1, MAL-2, MAL-3, CYA-1, CYA-2, CYA-3, CYA-4, CYA-5, CYA-6, CYA-7, CYA-8, CYA-9), TCDD (5 nM) and vehicle (DMSO; 0.1% v/v). Western blots show analyses of CYP1A proteins from two different primary human hepatocytes cultures (LH45 and LH46). As a loading control, the blots were probed to actin (data not shown).