Phagocytosis- definition, mechanism, steps with example


Phagocytosis is a type of endocytosis, which is the process of cells taking in materials from their surroundings by forming vesicles or vacuoles. Phagocytosis specifically refers to the ingestion of large particles, such as bacteria, viruses, fungi, cell debris, or foreign substances, that are too big to be transported by other means. Phagocytosis is an important mechanism of innate immunity, which is the first line of defense against infections and tissue damage. Phagocytosis helps to eliminate pathogens and clear away dead or damaged cells from the body.