Immune system disorders cause abnormally low activity or over activity of the immune system. In cases of immune system over activity, the body attacks and damages its own tissues (autoimmune diseases). Immune deficiency diseases decrease the body's ability to fight invaders, causing vulnerability to infections. Vasculitis. 2  The immune system attacks and damages blood vessels in this group of autoimmune diseases. 3  Vasculitis can affect any organ, so symptoms vary widely and can occur almost anywhere in the body. 4  Treatment includes reducing immune system activity, usually with prednisone or another corticosteroid.
Comments about Denis Wick DW5531 Series Adjustable Trumpet Cup Mute: This cup mute is a fantastic value and is versitle. The adjustable cup is great when switching between trumpets with different bell sizes to get the right gap between the bell and cup. It is esspecially helpful when the music calls for tight cup mute.
Other brass instrument mutes include the Derby Hat mute (made to look like a derby hat, an interesting visual effect), a Stop mute (used by the French horn) and a Practice mute. A Practice mute is usually used just as its name implies, to muffle the instrument sound so a brass player can practice without disturbing others (as much).