DHEA induces CD40, CD86, and CD54 expression on B. abortus-infected monocytes. CD40 (A), CD86 (B), and CD54 (C) expression by B. abortus-infected THP-1 monocytes (MOI, 100) in the presence or not of cortisol (1 × 10−6 M), DHEA (1 × 10−8 M), or cortisol plus DHEA (1 × 10−6 M and 1 × 10−8 M, respectively). Data are given as means ± SEM from at least 4 individual experiments. Significance of results for treated versus untreated cells: *, P < 0.1; **, P < 0.01.