Figure 4.

(A) Scatterplot of % change in protein carbonyl content following exposure to 100 μM H₂O₂ in 52 species of mammals. Values are pooled from Figures 1 and 3. Regression lines represent trends within individual clades, and the statistics represent comparisons within the group as a whole. (B) Scatterplot of mass-adjusted changes in protein carbonyl content following exposure to 100 μM H₂O₂ in 52 species of mammals. Values represent the residual from Supplementary Figure 3A (x-axis) & Supplementary Figure 3B (y-axis). (C) Scatterplot showing standardized contrast analysis for protein carbonyl content following exposure to 100 μM H₂O₂ in 52 species of mammal. Values are calculated as described in Ref. (22) and are based on the phylogeny in Supplementary Figure 4 and reference list in Supplementary Figure 5. Note: N = 51 instead of 52 due to the pairwise comparisons involved in the phylogenetic contrast.