Volpetti F Petrova E Maerkl SJ 2017 Synthetically engineered cells are powerful and potentially useful biosensors, but it remains problematic to deploy such systems due to practical difficulties and biosafety concerns. To overcome these hurdles, we developed a microfluidic device that serves as an interface between an engineered cellular system, environment, and user. We created a biodisplay consisting of 768 individually programmable biopixels and demonstrated that it can perform multiplexed, continuous sampling. The biodisplay detected 10 μg/L sodium-arsenite in tap water using a research grade fluorescent microscope, and reported arsenic contamination down to 20 μg/L with an easy to interpret "skull and crossbones" symbol detectable with a low-cost USB microscope or by eye. The biodisplay was designed to prevent release of chemical or biological material to avoid environmental contamination. The microfluidic biodisplay thus provides a practical solution for the deployment and application of engineered cellular systems. https://sonar.ch/global/documents/215208 eng info:eu-repo/semantics/altIdentifier/doi/10.1021/acssynbio.7b00088 info:eu-repo/semantics/altIdentifier/pmid/28771313 ACS synthetic biology. - 2017 arsenic biodisplay continuous bacterial culturing environmental sensor heavy metal sensor microfluidics Bacillus subtilis Cell Engineering Escherichia coli Lab-On-A-Chip Devices Microfluidic Analytical Techniques A Microfluidic Biodisplay. http://purl.org/coar/resource_type/c_6501