US Department of Agriculture
Usda: Tips to Help You Make Wise Protein Food Choices
Make wise choices when eating from the protein group. This website advises you to eat lean cuts of beef, trim visible fat off of meat and poultry, eat fish "rich in omega-3 fatty acids," and read food labels for nutritional information.
US Department of Agriculture
Choose My Plate: All About the Protein Group
Read about the foods that qualify as proteins and how much amounts to one serving of each.