Fig. 1.4.1.58. Importance of 3D analysis: A mushroom-shaped dendritic spine (yellow) containing a spine apparatus. A cluster of marked processes (left, arrow) shows similar morphology in 2D image not allowing their certain identification. 3D analysis from serial sections (right) safely identificated them as axons (green) and dendritic spine (yellow). Scale = 200 nm. (Hippocampus, rat.)