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.
Both are Nitrogen based molecules, but Urea(in urine) is CO(NH2)2, whereas ammonia is NH3. Excess nitrogen in mammals is toxic, and is removed from the body either in the form â¦ of urea or ammonia. Urea is produced in the liver, extracted from the blood by the kidneys, then excreted in the urine. If your kidneys cannot handle the load of nitrogen, then the nitrogen is excreted as ammonia through your sweat.