It is a substance made of about 80% lipid and 20% protein.

The artichoke contains about 10% protein, no oil, and a surprising lack of starch.

You need to learn more about protein, then try again.

Rumors still float around about protein causing joint and liver problems in dogs.

They also contain about 3% protein and 3.7%-6.8% dietary fiber.

Nutrition facts labels prominently display information about protein on the foods we buy.

Foldit is an online puzzle video game about protein folding.

The nutrition label, which has been required for 16 years, reflects earlier concerns about vitamins, minerals and protein.

Your body is about 20-percent protein by weight.

But the truth about protein is that many people don't need as much as they are taking in.