It is not made of cells like meat. It has no cholesterol-containing cell membranes. The more fat a dairy product contains, the more cholesterol it will also contain. The two most concentrated sources of cholesterol are liver and eggs. The liver makes cholesterol.
Egg yolks contain an abundant supply of cholesterol for the new cells of the developing chicks.
To summarize, we can give this general ranking. Organ meats, eggs. Skim milk products. And that's likely because the average American eats 400 to 500 mg cholesterol daily. Soybean oil margarine does not contain cholesterol.