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.
A carcinogen is an agent that induces neoplasia, i.e. cancer. Whatâs an agent? Chemicals, radiation, and viruses are among the agents implicated in causing cancer. A mutagen is a chemical that can cause changes (mutations) to the genetic material of a cell (DNA). A mutagen is one possible pathway to carcinogenesis. When mutations occur in germ cells (i.e. sperm or ova) it is possible for the mutation to be transmitted to offspring. A mutagen may be a carcinogen, but the link is not absolute. That is, not all chemicals shown to be mutagens are necessarily carcinogens. Conversely, not all carcinogens are mutagens. There are nongenotoxic carcinogensâchemicals that cause cancer by several mechanisms including by inducing sustained cell injury. Another important idea.