Scleroderma is not a single disease, but a set of related disorders involving a similar set of symptoms. This makes a concise definition â and diagnosis â difficult. All forms of scleroderma do, however, share the basic characteristics of fibrosis (an excessive accumulation of tissue) and inflammation.
Urea (NH2)2CO is a chemical that comes from the breakdown of proteins. It is the main source of Nitrogen in urine and is excreted by the body as a waste product from your kidn â¦ eys.   Urea is a readily available source of Nitrogen so is used as a fertilizer and sometimes as a supplement to feed for stock.  . 60 people found this useful.t is the main source of Nitrogen in urine and is excreted by the body as a waste product from your kidn â¦ eys.   Urea is a readily available source of Nitrogen so is used as a fertilizer and sometimes as a supplement to feed for stock.   . 60 people found this useful.
As urea is excreted, excess nitrogen in the body goes out with it. Urea is actually solid, colorless and odorless. However, it can give off ammonia in the presence of water. The ammonia gives the strong odor in the urine. The main purpose of urea in the body is to excrete excess nitrogen. However, it is also used by the body to some other purposes. Hillaire Rouelle, a French chemist discovered urea in 1773.