The Proteins are the body-building material, and the foods which are rich in Proteins are lean meat, the white of eggs, milk and cheese, nuts, peas and beans.
"The Book of Life: Vol. I Mind and Body; Vol. II Love and Society"
Upton Sinclair
This is why they are called Proteins, meaning "first foods," or most necessary foods.
"A Handbook of Health"
Woods Hutchinson
There are Proteins, or "meats," both animal and vegetable; and no one can support life without protein in some form.
"A Handbook of Health"
Woods Hutchinson