👉 In cell biology, a phagosome is a membrane-bound organelle that contains the outermost part of engulfing cells. It plays a crucial role in the process of吞噬细胞的吞食 (infecting) 腔隙 or cavity. The phagosome is composed of two membranes: an inner membrane and an outer membrane. The inner membrane is responsible for the internalization of particles, while the outer membrane is involved in the externalization of particles. In the context of