1. Normalized abundance of tetracycline resistance genes in Swedish infants by AMR++.
Normalized abundance of tetracycline resistance genes in Swedish infants by AMR++. High-Bifidobacterium infants had significantly less tetracycline resistance at both month 4 (P =  , Kruskal-Wallis test) and year 1 (P =  , Kruskal-Wallis test). This is despite an increase in tetracycline resistance in the high-Bifidobacterium infants (P = 0.0312, Wilcoxon paired test) and a decrease in tetracycline resistance in the low-Bifidobacterium infants (P =  , Wilcoxon paired test). As tetracycline was the only class of AMR to meet the P value of for significance, it was the only class compared at the later time points. This means that comparisons using the year 1 data had a P value of 0.05 for significance.
Diana H. Taft et al. mSphere 2018; doi: /mSphere