The Clydesdale is a draft horse breed from Lanarkshire, Scotland, and its name was inspired by the River Clyde. The Clydesdaleâs history goes back to the mid-1700s, when native stocks were mated with larger Flemish horses and then selected for use in agriculture and for all types of heavy hauling, including transport through the streets of Glasgow.
Definition. 1  A carcinogen is a substance that causes cancer (or is believed to cause cancer). 2  A carcinogenic material is one that is known to cause cancer. 3  The process of forming cancer cells from normal cells or carcinomas is called carcinogenesis. A carcinogenic material is one that is known to cause cancer. 2  The process of forming cancer cells from normal cells or carcinomas is called carcinogenesis.
Carcinoid syndrome occurs when carcinoid tumors overproduce hormones and other substances that normally circulate throughout your body. One of the most important substances that is overproduced is serotoninâone of the body's natural chemical messengers. When excess serotonin reaches tissues in the gastrointestinal tract, the lungs, or the skin, it causes the symptoms of carcinoid syndrome.