Fig. 3.

a–d This 3D-model of a Golgi apparatus stack containing integrated endocytic TGN, has been formed according to the data of an electron tomography tilting series. The model is shown from different sides. The endocytic TGN (green) consists of a free portion (long arrows), and another portion integrated in the stack (short arrows), and is closely associated with trans Golgi ER (red). In both the free and the Golgi-associated portions, globular elements are visible. Stacked Golgi cisternae are shown in yellow. In c, the stacked Golgi cisternae are removed. Spikes mark clathrin coats