Specifically, squalene is the gooey oil squeezed from the liver of a shark.
确切地说，角鲨烯是从鲨鱼肝脏中挤出的粘稠油。
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Don't buy products that exploit the oceans, such as coral calcium, shark cartilage supplements, and coral jewelry, and if you take fish oil, you can substitute equally healthy flaxseed oil.
Squalene is commercially extracted from fish oil, and in particular shark liver oil. Squalene used in pharmaceutical products and vaccines is purified from this source.