Chips, guts, and gas: unraveling volatile microbial mysteries in real time!

Exploring the gastrointestinal of hydrogen sulfide (H2S) is difficult because of its volatility and the sence of a precisely controllable model system for manipulating gut environment. Hayes et al. dress this issue by engineering Escherichia coli to titrate H2S levels in a gas -impermeable gut -on -chip device.