<qa>  What is the goal of liraglutide?Aim 1: Quantify M1 and M2 surface and intracellular markers polarization via flow cytometry in subcutaneous abdominal adipose tissue and peripheral blood mononuclear cells at baseline and after 4 weeks administration of liraglutide versus placebo to weight-stable, obese, type 2 diabetic patients. Weight loss will be prevented in order to ascertain the effect of liraglutide alone. 