Fig. 8From: Copper oxide nanoparticle toxicity profiling using untargeted metabolomicsHeatmap showing log2 fold changes for treatments of staurosporine (STS), camptothecin (CPT) and copper oxide nanoparticles (CuO NPs) for the various time points (n = 3), the levels of identification are indicated by 1identified by reference substance (MS2 and RT), 1aidentified by reference substance (only RT), 2identified by comparison of MS2 spectra with reference databases such as Metlin. The dendrogram on the left hand side shows a clustering of similarly regulated metabolites upon treatment with STS/CPT/CuO NPsBack to article page