Liver ENPP1 protein abundance at RYGB surgery and at operation 2. (A) ENPP1 protein abundance had a significant increase in the rsT2DM group after RYGB surgery. (B) Corresponding western blot for ENPP1 for individuals that had a second liver biopsy. Black lines denote non-adjacent lanes. For uncropped blots see additional document 1. rsNGT ●: repeat surgery normal glucose tolerance (n = 6); rsT2DM ○: repeat surgery type 2 diabetes (n = 7). Data is presented as mean + SE.