1) Special proteins produced by the body in response to foreign substances including bacteria and viruses; there are five structurally distinct classes of immunoglobulins produced by plasma cells in the bone marrow and other lymphoid tissue that bind to and neutralize foreign substances (antigens).
People give up eating meat and animal products such as milk, cheese, and eggs for many reasons. But doing so may increase the risk of anemia, a potentially serious condition in which the body does not make enough oxygen-bearing red blood cells. For vegetarians who eliminate meat, anemia can be due to an iron deficiency.
When it comes to foods with iron, specifically heme iron (the more easily absorbable form), liver definitely tops the list. If you struggle with any type of anemia â a clear sign of an iron deficiency â this is probably the best food to consume in the world because it contains iron as well as folate and vitamin B12.