Background: Accumulation of excess cholesterol by intimal arterial smooth muscle cells (SMCs) contributes to the formation of foam cells in atherosclerotic lesions.

• 背景：动脉内膜平滑肌细胞内常常有胆固醇的过多聚集，这对于粥样硬化病变区域中泡沫细胞的形成具有重要作用。