Something about a drug transplant
High levels of LDL cholesterol and triglycerides, and low levels of HDL cholesterol are linked to heart disease. High levels of LDL cholesterol, often called the “bad” cholesterol, are associated with heart disease. LDL cholesterol can stick to artery walls causing the formation of blockages or plaques..
There are three kinds of blood vessels: arteries, veins, and capillaries. Each of these plays a very specific role in the circulation process. Arteries carry oxygenated blood away from the heart. They're tough on the outside but they contain a smooth interior layer of epithelial cells that allows blood to flow easily.
Medical dictionaries is your answer
I cant see the last question and i guess it’s all upon you too