JAK2 and atherosclerosis: Chimeric Jak2<sup>VF/WT</sup> or control WT/WT bone marrow was transplanted into Ldlr<sup>-/-</sup> mice and, following 13-16 weeks of western diet-induced atherosclerosis progression, cholesterol was lowered either moderately (to 200-300 mg/dl) or markedly (to 100 mg/dl).