This article illustrates how the expression of neurotransmitter receptors can be quantified and the pattern analyzed at synapses with identified pre and postsynaptic elements using a combination of viral transduction of optogenetic tools and the freeze-fracture replica immunolabeling technique.
Schönherr, S., Seewald, A., Kasugai, Y., Bosch, D., Ehrlich, I., Ferraguti, F. Combined Optogenetic and Freeze-fracture Replica Immunolabeling to Examine Input-specific Arrangement of Glutamate Receptors in the Mouse Amygdala. J. Vis. Exp. (110), e53853, doi:10.3791/53853 (2016).