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February 27, 2009

Volume 284Issue 9p5425-e99906
Open Access
On The Cover: Loops within a signaling network from β-adrenergic receptor to mitogen-activated protein kinase. Signal flow in this and other networks involves multiple interacting loops. Understanding the regulatory behavior of such systems often requires computational analysis and system biology approaches. For details see the article by Neves and lyengar, pages 5445–5449....
On The Cover: Loops within a signaling network from β-adrenergic receptor to mitogen-activated protein kinase. Signal flow in this and other networks involves multiple interacting loops. Understanding the regulatory behavior of such systems often requires computational analysis and system biology approaches. For details see the article by Neves and lyengar, pages 5445–5449.

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