Groups of mice were fed either high fat diet (HFD) or normal chow (NC) for a minimum of four weeks prior to transplantation with allogeneic bm12 cardiac grafts. Shown is graft survival in ApoE−/−IL-6+/+ recipient mice fed HFD (squares, MST = 48 days, n = 9), ApoE+/+IL-6+/+ recipient mice fed NC (circles, MST > 100 days, n = 5), and ApoE−/−IL-6−/− recipient mice fed HFD (upright triangles, MST > 100 days, n = 8, P = 0.004 vs ApoE−/− HFD recipients). Significance was determined by log-rank (Mantel-Cox) test.