Fig. 1
From: CO2 and electrical stunning differentially affect energy metabolism in pigs

Principal component analysis from nontargeted GCxGC-qMS metabolite profiling of sticking blood from 35 pigs undergoing different stunning methods. (A) PCA score plot (B) Volcano plot highlighting most significant molecular features (C) ANOVA of principle components 1 and 2 indicating a significant difference of metabolite profiles between CO2 and electrical stunning. Orange—electrical stunning and turquoise—CO2 stunning.