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(A) Immediate and (B) delayed list learning scores for memory-impaired adults with (E4+) and without (E4−) the APOE-ε4 allele. The memory-impaired/ε4− group showed maximal benefit at the 20 IU dose relative to the memory-impaired/ε4+ group (ps=0.0637and 0.0416 for between group comparisons for immediate and delayed recall).
