A cell culture incubator is a laboratory device that provides a controlled environment for the growth and survival of cells. It maintains optimal temperature, humidity, and gas composition, such as CO2 and O2, to mimic the conditions of the human body or other organisms. A cell culture incubator can be either air-jacketed or water-jacketed, depending on the heating method. It can also have features such as HEPA filters, sterilisation cycles, and variable oxygen control to prevent contamination and enhance cell quality. A cell culture incubator is used for various applications, such as tissue engineering, stem cell research, cancer biology, and vaccine development.