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.
How Woodwind Instruments Work. Woodwinds are one of the major families of instruments in use today. Woodwinds are basically defined as hollow tubes, which, when blown on one end, produce a sound. Most wind instruments have keys or fingerholes to vary the pitch of the sound, and different methods may be used to create the basic sound. Mouthpieces Single Reed (Clarinet/Saxophone) The single reed produces a sound by vibrating against the mouthpeice when blown. The reed is held down by a metal ligature. Reeds are very sensitive, and must be cared for to produce the right tone. Double Reed (Oboe/Bassoon) The double reed uses two reeds, tied together, to make a sound. The sound it produces is somewhat nasal, and can be very difficult to build, maintain, and play. Most double reed players make their own reeds. The tight opening of the double reed means that the musician can play long phrases in one breath.