Constant A/B ratio in responses to <b> and </b>.

<p>Network is the one described by <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1002748#pcbi.1002748.e076" target="_blank">Eq.2</a>. Random parameter set is as in <a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1002748#pcbi-1002748-g002" target="_blank">Fig. 2</a>. Similar results are available for all ASI circuits (see <i><a href="http://www.ploscompbiol.org/article/info:doi/10.1371/journal.pcbi.1002748#pcbi.1002748.s001" target="_blank">Text S1</a></i>).