Autoimmune diseases arise when the immune system attacks one or more of the body's normal constituents as if they were invaders. When the immune system fails to recognize self it may produce immune cells or antibodies (called autoantibodies) that target its own cells, tissues, and/or organs. Those attacks cause inflammation and tissue damage that lead to autoimmune disorders. There are over 80 diseases that occur as a result of autoimmune responses. The National Institutes of Health (NIH) estimates that 23.5 million Americans are affected.
RV Gray Water Tank. Since only sink and bath water collects in the RV gray water tank it needs less attention than the RV black water tank. Most people use so much water whenever the RV is hooked up for a few days, they find it convenient to leave the gray water tank valve open.
Keeping Discus in a sandy tank :-. if you are a first time discus keeper, then you may not like a bare bottom tank. You may say that it looks odd to see some fishes move in a BB tank. Donât worry, though many discus keepers love to keep discus in a BB tank, but they can be kept in a gravel tank or sandy substrate also. i) Different types of discus in a sandy tank: Ok, you choose sand as a substrate. Then I suggest that make a black background for this tank.