Fig. 2.

Aromatase activity in KGN cells. (A) Concentration-dependent inhibition curve of Letrozole and ICI 182,780. (B) 24 h-exposure to different concentrations of NAR and 8-PN. (C) Effects of COU, GEN, RSV and QUE at diverse concentrations on aromatase activity. Data are expressed as % of aromatase activity compared with 100% of aromatase activity in vehicle control treated cells. The experiments were performed in duplicates and repeated three or four times (N = 3; N = 4). * and/or ^# significantly different from relevant solvent vehicle control Ethanol (0.1%) or DMSO (0.1%)-treated cells, respectively. P < 0.05.