Original sentence: Phagocytes are the white blood cells that protect the body by ingesting (phagocytosing) harmful foreign particles, bacteria and dead or dying cells.Phagocytes occur in many species; some amoebae behave like macrophages, which suggests that phagocytes appeared early in the evolution of life.Phagocytes of humans and other animals are called professional or non-professional, depending on how effective they are at phagocytosis
Edited sentence: Phagocytes are the white blood cells that protect the body by ingesting (phagocytosing) harmful foreign particles, bacteria, and dead or dying cells.Phagocytes occur in many species; some amoebae behave like macrophage phagocytes, which suggests that phagocytes appeared early in the evolution of life.Phagocytes of humans and other animals are called "professional" or "non-professional", depending on how effective they are at phagocytosis