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The survival of uninfected honeybees fed with commercial probiotics and prebiotics. Variant A according to Fig. 1. Supplementation among the groups: SS (pure sugar syrup); L1 (1.25 × 103 of L. rhamnosus CFU per 1 mL of sugar syrup); L2 (3.75 × 103 of L. rhamnosus CFU per 1 mL of sugar syrup); In1 (inulin 2 μg per 1 mL of sugar syrup). Lowercase letters indicate the differences significant for the comparison between variants p < 0.05
