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. Author manuscript; available in PMC: 2010 Dec 11.
Published in final edited form as: Mol Cell. 2009 Dec 11;36(5):894–899. doi: 10.1016/j.molcel.2009.11.018

Figure 1.

Figure 1

Fold-change detection means that the dynamics of the output (amplitude and duration of the transcription of gene Z) depends only on the fold-changes in the level of the input signal, not on the absolute levels of the input signal.