High-density lipoprotein:
High-density lipoprotein (HDL) is one of the five major groups of lipoproteins, which, in order of molecular size, largest to smallest, are chylomicrons, very low-density lipoprotein (VLDL), intermediate-density lipoprotein (IDL), low-density lipoprotein (LDL), and HDL. Lipoprotein molecules enable the transportation of lipids, such as cholesterol, phospholipids, and triglycerides, within the water around cells (extracellular fluid), including the bloodstream.
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高密度脂蛋白:
高密度脂蛋白（High-density lipoprotein，又称为HDL）是脂蛋白的一种，是由蛋白质和脂质组成的大分子复合物。
zh.wikipedia.org
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High-density lipoprotein高密度脂蛋白