The Symbolism of Water. Many works of literature use symbols to represent abstract ideas. One symbol that is commonly used is water. Water is a viable symbol because it is versatile. It can be used to represent many different ideals because water in itself is ever changing. Water is used in many works to represent such ideals as death, life, love, betrayal, purity, holiness, and so on.
Alkylating Agents. Alkylating agents were one of the earliest classes of drugs used to treat cancer, beginning in the 1940âs. The biggest weakness of most cancer cells is that they are very sensitive to DNA damage. Alkylating agents work by reacting with the proteins that bond together to form the very delicate double helix structure of a DNA molecule, adding an alkyl group to some or all of them.
Chemotherapy Agents. There is a large number of chemotherapeutic drugs and they are generally divided or classified into different categories, namely alkylating agents, antimetabolites, anti-tumour agents, anthracyclines, topoisomerase inhibitors, plant alkaloids.ome chemotherapy drugs can be used for modulating the cell behavior without attacking the cells directly. The most important chemotherapy agents are the Alkylating agents. They are named so because they can add alkyl groups to the many electronegative groups under conditions which are present in some cells.