- Flash talk 4 @bsacandjac.bsky.social #AntibioticResistance & mechanisms! Caleb Marsh is designing dual efflux inhibitor-abx molecules, then testing them in @ukhsa.bsky.social's open innovation platform for abx development. Very promising drops in MIC & spontaneous resistance rates. #MicroSkyNov 27, 2025 17:55