Microscopic polyangiitis (MPA) is a small vessel vasculitis which primarily affects the arterioles (small arteries), capillaries and venules (small veins).
HIV is a virus that gradually attacks the immune system, which is our body's natural defence against illness.AIDS (Acquired immune deficiency syndrome or acquired immunodeficiency syndrome) is a syndrome caused by a virus called HIV
The kidneys are two organs located in your midsection on either side of your spine in the middle of your back, just above the waist. They clean your blood, keep the balance of salt and minerals in your blood, and help control blood pressure.
