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Performance on the single pellet retrieval task in aged-matched ARC and CRL rats, trained at the same time and by the same experimenters. (A) The ARC rats had greater reaching performance overall, as measured by the % successful reaches/attempt, compared to CRL rats. (B) In % hits/trial, there was a significant group by day interaction (see text for details). Data are from ARC3 and CRL5 batches (Table 1). Data are means±S.E.M. (*P <.05)
