* Bacteria: Phagocytosis is a key part of the immune system, where cells like macrophages engulf and destroy harmful bacteria.
* Viruses: Similar to bacteria, phagocytosis helps eliminate viruses from the body.
* Cellular debris: When cells die, their remains can be broken down by phagocytosis.
* Foreign objects: Particles like dust or small pieces of debris that enter the body can be engulfed by phagocytes.
Think of phagocytosis like a cell "eating" these particles, engulfing them into its own cytoplasm.
