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Regulation of mouth dimorphism and dauer induction by synthetic samples of identified P. pacificus metabolites. All experiments were performed in triplicate for each treatment. a, b) Compounds were assayed at 1 µM concentration (*P < 0.01, **P < 0.001). c, d) Compounds with significant activity at 1 µM (P < 0.01) were subsequently tested at a range of concentrations.
