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Correction for:
Levine E, Zhang Z, Kuhlman T, Hwa T (2007) Quantitative characteristics of gene regulation by small RNA. PLoS Biol 5(9): e229. doi:10.1371/journal.pbio.0050229
The authors would like to add the second author, Dr. Zhang, as a second corresponding author. He can be contacted by e-mail at zzhongge@biomail.ucsd.edu.
