There are three general reasons for establishing buffer zones: to provide sanctuary, to provide a neutral area that allows for supervision where contending claims exist (in order to, potentially, facilitate cooperation), and to simply reduce tensions through separation of disputants.
Iron and immunity are closely linked: firstly by the fact that many of the genes/proteins involved in iron homoeostasis play a vital role in controlling iron fluxes such that bacteria are prevented from utilising iron for growth; secondly, cells of the innate immune system, monocytes, macrophages, microglia and lymphocytes, are able to combat bacterial insults by carefully controlling their iron fluxes, which are mediated by hepcidin and ferroportin.
1 Iron promotes normal red blood cell production. 2  Iron is a vital component of hemoglobin. 3  Hemoglobin is the protein that transports oxygen in the blood. 4  Iron plays a role in delivering oxygen to the cells, including muscle cells. 5  Iron plays a key role in energy metabolism.he body's normal supply of iron is maintained by the body itself; it adjusts and controls the amount it absorbs from the food we eat. 1  Every living cell contains iron. 2  Iron promotes normal red blood cell production. 3  Iron is a vital component of hemoglobin. 4  Hemoglobin is the protein that transports oxygen in the blood.