Cell culture flasks are specialized containers used to grow and maintain cells in a laboratory setting. They are typically made of plastic or glass and come in various shapes and sizes, allowing researchers to cultivate different types of cells. The flasks provide a controlled environment, including temperature, humidity, and gas exchange, which is essential for cell growth. These flasks often have a flat or baffled bottom to maximize surface area for cell attachment and growth. Some designs include vented caps to allow for gas exchange while preventing contamination. Commonly used in biotechnology and pharmaceutical research, cell culture flasks are vital tools for studying cellular behavior and testing new drugs.