Caps1 knock-out results in dilated Golgi cisternae in hippocampal neurons. A, B, Electron micrographs of Golgi structures in hippocampal CA3 pyramidal cells in control (flox/−) (A) and Caps1 cKO [flox/−, Emx1(+/−)] (B) mice at P21. C, D, Electron micrographs of Golgi structures in hippocampal dentate granule cells in control (flox/−) (cont; C) and Caps1 cKO [flox/−, Emx1(+/−)] (D) mice at P21. Scale bars, 500 nm.