APOE and atherosclerosis: A subsequent resumption of a standard normal diet for 4 weeks, the blood cholesterol levels return to the same levels as the control APOE*3-Leiden mice on a standard normal mouse diet, accompanied by a reduction in inflammatory cell infiltration in the atherosclerotic lesions, although no regression in atherosclerotic plaque size is observed [72], indicating that APOE*3-Leiden mice might be a suitable model for studies on the progression and regression of atherosclerosis.