Swimming bacteria in Poiseuille flow: The quest for active Bretherton-Jeffery trajectories Gaspard Junot, Nuris Figueroa-Morales, Thierry Darnige, Anke Lindner, Rodrigo Soto, Harold Auradou and Eric Clément EPL, 126 4 (2019) 44003 Published online: 28 June 2019 DOI: 10.1209/0295-5075/126/44003