Kotula et al. 2014
From Genetics Wiki
Kotula, J. W., Kerns, S. J., Shaket, L. A., Siraj, L., Collins, J. J., Way, J. C., & Silver, P. A. (2014). Programmable bacteria detect and record an environmental signal in the mammalian gut. Proceedings of the National Academy of Sciences, 201321321.