Fig. 4. Percentage of L-selectin positive lymphocytes from African-American subjects reading magazines (o) or undergoing a speech task (127). Data are presented as means ± SE. Blood was drawn at BL, immediately after the speech/reading task (0), and 20 minutes after the task (20). The two groups showed a differential change across the session with a significant group x time interaction (F(2,54) = 6.1, p = .004).

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