Suppl. Fig. 1. Activity of CYP1A1 enzyme in the embryo-fetal chicken livers following exposure to benzo(a)pyrene (B(a)P). Total dose represents cumulative dose, administered in 3 daily injections on incubation days 9 through 11. The assay was conducted using CYP1A1 detection kit (Catalog#V8751) from Promega Corporation (Madison, WI, USA) according to the manufacturer’s protocol. luciferin-CEE was used as a substrate