Fig. 3.

Training-induced PSD95 protein overexpression in T286A mutants. PSD95 expression was analyzed on the brain sections 2 h after conditioning (5xUS). The control animals were taken from the home cage (naïve), exposed to the experimental context without shock presentation (box) or to single-trial (1xUS), the paradigm which does not induce LTM in the mutants (16). (A) Representative microphotographs. (B) The density of PSD95⁺ puncta was analyzed in the stratum radiatum of the CA1 area of the dorsal hippocampus.