Fig. 2

An exemplary image of a DGGE gel of the mucoid intestinal microbiome of brown trout larvae treated with different metformin concentrations [ladder, control (a), 1 µg/L (b), 10 µg/L (c), 100 µg/L (d), and 1000 µg/L (e)]. The ladder represents a mixture of different bacteria-specific amplicons