FIGURE 2.
Bacterial clearance in P. dominula in foundresses and workers after yeast administration. Mean and standard deviation of residual load of Escherichia coli colony-forming units (CFUs) per milliliter in control (C) and treated groups (YH1 strain and YP4 strain administration) in foundresses and workers, at 24 h after bacterial infection. Data are representative of the bacterial clearance measure, reported as z-score transformation (residual z-score of CFUs per milliliter).