Examples of proteins fall under the meat, milk and vegetable food group. (fitnsync.com)
Based on these early rat experiments the amino acid pattern found in animal products was declared to be the «gold standard» by which to compare the amino acid pattern of vegetable foods. (nealhendrickson.com)
Vegetarian sources are not absorbed as well as iron from meats, but vitamin C in fruits and vegetables helps the body to absorb iron from vegetable foods. (daddilife.com)