Fig. 1.4.1.40.  Free ("naked") postsynaptic density (arrow) in the dendritic spine (S) apposed to the pyramidal cell plasma membrane. D - dendrite, N - nucleus of the pyramidal cell. Scale = 0.5 µm. (Mouse, neocortex.) (Adapted from Spacek 1982, with kind permission of Kluwer Academic Publishers.) Download the high resolution image.