ionized calcium binding adaptor molecule 1 (Iba1)-labeled microglial cells with phagocytic pouch in Gunn rat. Somata of Iba1-labeled cells with extended processes and phagocytic pouch attached to damaged/broken cells (*). Arrows indicate immunoreactive products. Notice the plentiful organelles within the pouch. Scale bars: 2 μm (A, B), 1 μm (A', B'). G = Golgi apparatus; GCL = granular cell layer; Ly = lysosome; N = nucleus; P = phagocytic pouch; Pr = process.