All of the options listed are correct. CO2 incubators are used to create a controlled environment for the growth and maintenance of various types of cells and microorganisms. Capnophiles are microorganisms that require increased levels of carbon dioxide (CO2) for optimal growth, and CO2 incubators provide a suitable environment for their cultivation. Aerobes are microorganisms that require oxygen for growth, and CO2 incubators can be adjusted to provide appropriate oxygen levels. Viruses can also be grown in CO2 incubators when they require a specific temperature and gas composition for propagation. Obligate aerobes, which are microorganisms that can only survive and grow in the presence of oxygen, can also be cultivated in CO2 incubators.
