Fig. 2From: Identification of the estrogen-active compounds via integrating effect-directed analysis and non-target screening in soils of the northeastern ChinaConcentration–response curves in the YES assay for the soil in the plantation village (black closed circles), and the E2 standard (red closed circles). Concentration values on the x-axis refer to the actual exposure of the sample in the experiment. PC: positive control, DLS: Daling SummerBack to article page