Where can we find proteins!
Proteins exist as well in the animal kingdom and the vegetable kingdom.
In the animal kingdom we have meat, fish and seafood, eggs and dairy products, that are complete proteins of a high biological value as they contain all the essential amino acids.
In the vegetable kingdom we have legumes, cereals, seeds and oil seeds, soy and its derivatives (like tofu). Vegetable proteins do not have all the essential amino acids, but soy and its derivatives are also complete proteins of a high biological value and similar to those of animal origin, what makes this plant an exception in the vegetable kingdom.
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