Oscillation in microRNA Feedback Loop

The dynamic behaviors of microRNA and mRNA under external stress are studied with biological experiments and mathematics models. In this study, we developed a mathematic model to describe the biological phenomenon and for the first time reported that, as responses to external stress, the expression levels of microRNA and mRNA sustained oscillation. And the period of the oscillation is much shorter than several reported transcriptional regulation negative feedback loop.
Comment: There were some mistakes in the analysis in this paper's first version submitted on 22 Apr 2013. We corrected them in the second version submitted on 23 Sep 2013. So please delete the "v1" version of this paper, Thank you!