Chemotherapy is the use of medication (chemicals) to treat disease. More specifically, chemotherapy typically refers to the destruction of cancer cells. Chemotherapy typically refers to the destruction of cancer cells. Chemotherapy may also include the use of antibiotics or other medications to treat any illness or infection. Chemotherapy may be given with a curative intent or it may aim to prolong life or to palliate symptoms. It is often used in conjunction with other cancer treatments, such as radiation therapy, surgery, and/or hyperthermia therapy. Most chemotherapy is delivered intravenously, although a number of agents can be administered orally. Chemotherapy is often used as an adjuvant treatment (treatment given after surgery or radiation therapy) to kill any cancer cells that remain. It may also be used as neoadjuvant therapy. Chemotherapy kills dividing cells by damaging the part of the control centre inside each cell that makes it divide. Some drugs interrupt the chemical processes involved in cell division.