Associated import rates corresponding to WT ( k I = 1.60 + −0.06 ks −1 , n = 80), (GS) 4 -WT ( k I = 1.82 ± 0.07 ks −1 , n = 357), (GI) 4 -WT ( k I = 1.97 ± 0.06 ks −1 , n = 87), (GD) 4 -WT ( k I = 1.45 ± 0.04 ks −1 , n = 98). Significance levels for the two-tailed Mann–Whitney non-parametric test: * P < 0.05; ** P < 0.001; **** P < 0.0001. WT versus (GS) 4 -WT, P = 2.46 × 10 −3 ; WT versus (GI) 4 -WT, P = 1.11 × 10 −6 ; WT versus (GD) 4 -WT, P = 0.02; (GS) 4 -WT versus (GI) 4 -WT, P = 0.04; (GI) 4 -WT versus (GD) 4 -WT, P = 2.74 × 10 −11 .
