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Bicluster heat map of chemicals with at least 1 hit in a specific developmental endpoint. The responses were clustered using Ward’s method by Euclidean distance between LELs. The heatmap is colored so that increasingly potent LEL responses are darker shades of blue, with inactive responses having no color. Many of the 304 chemicals hitting at least 1 specific endpoint also caused embryonic lethality, indicated by the black sidebar. Abbreviation: LEL, lowest effect level.
