Chunk #8 — Methods — Human hippocampal samples

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GABAergic gene expression in postmortem hippocampus from alcoholics and cocaine addicts; corresponding findings in alcohol-naïve P and NP rats.

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The mean (SD) ages were: cocaine addicts: 39.9 (4.9) yrs; alcoholics: 36.9 (9.5) years; controls: 37.5 (6.1) years. The mean (SD) PMIs were: cocaine addicts: 17.6 (3.0) hrs; alcoholics: 15.8 (3.5) hrs; controls: 17.1 (4.4) hrs. The ethnicity ratio: Caucasian or Caucasian/Hispanics:African Americans was as follows: cocaine addicts: 5∶3; alcoholics: 7∶1; controls: 5∶3.