translate English to French: All Aeromonas, Citrobacter, and Enterobacter strains isolated from raw water on mX-Gal medium were β-galactosidase positive.
Toutes les souches d'Aeromonas, de Citrobacter et d'Enterobacter isolées de l'eau brute sur milieu mX-Gal étaient β-galactosidase positives.