👉 A leucocytic is a type of cell that is particularly well-suited for killing or eliminating other cells in order to prevent an infection. It can be used as a defense mechanism against pathogens and in certain immune systems, such as those found in the spleen and lymph nodes. Leucocytes are also involved in the process of phagocytosis, which involves the engulfing and destruction of infected or damaged material by cells in the body's immune system.