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(A) Diacetyl; (B) 1-methylpyrrole; (C) 2-heptanone; (D) butanone; (E) 1-pentanol; (F) 2-ethoxythiazole; (G) isoamyl alcohol; (H) 2-methylpyrazine; (I) 2-isobutylthiazole; (J) 2,4,5-trimethylthiazole; (K) 4-chlorobenzyl mercaptan; (L) 2-cyclohexylethanol. Purple dotted line marks approximate place where 50% of total behavior change occurs for each odor. Error bars indicate standard error.
