Exposure time effects on gene set (AUC%) analysis. Areas under each sensitivity vs. rank threshold curve (ROC curve) for FL-interacters and orthogonal gene sets/pathways were converted to percentages (AUC%s) and plotted for each FL ET experiment. Mean AUC%s (ET 1 to 4) for each gene set were computed and compared in the table. Larger AUC% values indicated better prediction of FL action on a gene set. AUC% values were the averages of two replicates.