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Avpr1a performance on fear conditioning (mean ± SEM). There were no effects of genotype on Acquisition, Context or Cue Retention (left panels, a,b,c; p>0.05). Group had an effect on acquisition but not context retention (right panels, a and b; P<0.01, P>0.05, respectively), but the paired group had higher levels of freezing during cue retention (P < 0.0001).
