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Left: CSF cortisol concentrations in ug/dL in subjects with the S poly-T, as a function of APOE ε4. Right: CSF cortisol concentrations in ug/dL in subjects without the S poly-T, as a function of APOE ε4. e4 positive refers to subjects with APOE ε4; e4 negative refers to subjects without APOE ε4. △: indicates a significant difference.
