Fig. 3From: Effect of tetracycline treatment regimens on antibiotic resistance gene selection over time in nursery pigsPrincipal component analysis of gene composition of pigs at the five participating farms. Values used were Relative quantities of tet(O), tet(W), ermB, and ermF compared to 16S prior to treatment at T1. Ellipses are normal data ellipses for each farm. Data was scaled and centredBack to article page