Cytophagia is a biological process where certain cells, particularly in the immune system, engulf and digest other cells or cellular debris. This process is crucial for maintaining tissue health and responding to infections. It helps remove dead or damaged cells, ensuring that the body functions optimally. This phenomenon is often associated with macrophages, a type of white blood cell that plays a key role in the immune response. By performing cytophagia, macrophages help protect the body from pathogens and contribute to the healing process after injury.