Blood proteins are essential components of the human body, and there are several different types. GLOBULIN is a type of protein found in blood plasma that helps to transport hormones, lipids, and other substances throughout the body. RHESUS is a type of protein found in red blood cells that helps to determine blood type. Tofu is a type of soybean-based food that contains high levels of protein. Amino acids are the building blocks of proteins, and soya is a type of legume that is a good source of protein.