Final answer:
Chemotherapy is a type of cancer treatment that uses drugs to target rapidly dividing cells, including cancer cells. It may be used alone or in combination with other treatments. Targeted therapies are a more advanced form of chemotherapy that specifically target cancerous cells.
Step-by-step explanation:
Chemotherapy is a type of cancer treatment that uses one or more anti-cancer drugs (chemotherapeutic agents) as part of a standardized chemotherapy regimen. The drugs are often delivered directly into the bloodstream rather than orally. Chemotherapy may be used alone or in conjunction with other treatments and targets rapidly dividing cells, including cancer cells. Targeted therapies are a more sophisticated form of chemotherapy that specifically target molecules distinguishing cancerous cells from normal cells.