In a previous study (Gautam et al., 2015), we found that 24hrs after Day 10 of social stress, there were significant changes in the plasma proteins of Agg-E SS mice, including haptoglobin, myeloperioxidase, and serum amyloid P-component that are known to be affected by inflammation, as well as mRNA data showing signs of liver inflammation 24hrs post-stress exposure. Here, HP is linked to medical procedure.