Fig. 1From: Vitamin D receptor antagonist activity in wastewater effluents—potential for endocrine disruptionCytotoxicity of concentrated water samples as measured by MTS assay in VDR-UAS-bla HEK 293 T cells. Bars show mean ± standard deviation (n = 4). Cytotoxicity was defined as a decrease in cell viability of > 20% as compared to the vehicle control (cutoff for cytotoxicity shown as dotted line)Back to article page