Most protein foods of animal origin such as meat, poultry, fish, eggs, cheese and milk include all of the essential amino acids and are consequently called complete proteins. (fitnessandpower.com)
There are different types of vitamin A — vitamin A1 (retinol) is only found in foods of animal origin like liver, fish, and cheese. (beautyandhealthlife.com)
OIE member countries provide the assurance for safe food of animal origin by synchronizing their activities with other groups and organizations. (actionforanimalsnetwork.org)