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Fear extinction and pMAPK expression in infant rats.
A: Mean (± SEM) CS-elicited freezing during extinction training. B, C: Mean (± SEM) number of pMAPK stained neurons in B: the prelimbic region (PL) and C: the infralimbic region (IL) of the medial prefrontal cortex (mPFC) of infant rats following extinction training. *** p < .001.
