Figure 2. Expression levels of candidate reference genes (Cq values).

of the four larval groups separately and in combination. Bars indicate the 25/75 percentiles, whisker caps indicate the 10/90 percentile, the horizontal line marks the median and all outliers are indicated by dots. CON: conventional larvae; GF: germ-free larvae and GFPr: germ-free larvae supplemented with a probiotic candidate.