Anti-mouse IL-6-InVivo monoclonal antibody (Clone:MP5-20F3) can reacts with mouse IL-6 (interleukin-6) which is a 21-28 kDa cytokine that is expressed by many cell types, including T lymphocytes, B lymphocytes, monocytes, fibroblasts, and endothelial cells. Anti-mouse IL-6-InVivo has been shown to neutralize the bioactivity of natural or recombinant IL-6.