Invasive Ductal Carcinoma (IDC). Invasive ductal carcinoma (IDC), also known as infiltrating ductal carcinoma, is cancer that began growing in the duct and has invaded the fatty tissue of the breast outside of the duct. IDC is the most common form of breast cancer, representing 80 percent of all breast cancer diagnoses.nvasive ductal carcinoma (IDC), also known as infiltrating ductal carcinoma, is cancer that began growing in the duct and has invaded the fatty tissue of the breast outside of the duct.
An alkene is a hydrocarbon containing double bonds. An alkyne is a hydrocarbon containing triple bonds. Ethene, C 2 H 4, is an example of an unsaturated hydrocarbon with a double bond.ethyne (acetylene), C 2 H 2 is an example of an unsaturated hydrocarbon with a triple bond.thene, C 2 H 4, is an example of an unsaturated hydrocarbon with a double bond. ethyne (acetylene), C 2 H 2 is an example of an unsaturated hydrocarbon with a triple bond.
Definition of hydrocarbons: Hydrocarbons are chemical compounds that are formed from only hydrogen atoms and carbon atoms. Categories of hydrocarbons include: 1  Alkanes - *saturated hydrocarbons, only single bonds. 2  Alkenes - *unsaturated hydrocarbons, include a double bond.3  Alkynes - *unsaturated hydrocarbons, include a triple bond (more advanced topic, included in A-Level Chemistry).ategories of hydrocarbons include: 1  Alkanes - *saturated hydrocarbons, only single bonds. 2  Alkenes - *unsaturated hydrocarbons, include a double bond.