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. Author manuscript; available in PMC: 2013 May 27.
Published in final edited form as: Exp Gerontol. 2011 Mar 29;46(8):643–659. doi: 10.1016/j.exger.2011.03.003

Table 1.

Summary of cohorts used in study.

Cohort N 6 months N 18 months N 24 months Behavioral
analyses		 Molecular analyses
1 6 6 11 CSRTT; PR; OF;
NO		 Microarrays; Serum cytokines;
Quantitative PCR
2 8 0 9 CSRTT None
3 10 10 10 None Microarrays; Serum cytokines
4 6 0 6 None RNA sequencing of microglia