Cell models are experimental systems that are used to study the behavior, function, and characteristics of cells in a controlled environment. These models can be simple, such as single-cell cultures, or complex, such as organoids or 3D tissue cultures. Cell models are commonly used in research to investigate various biological processes, diseases, and drug testing. They provide a valuable tool for scientists to study cellular behavior and responses in a controlled setting, allowing for the identification of potential therapies and treatments for a wide range of conditions.