Pituitary expression of C5a receptor (R) during experimental sepsis in IgG or anti-C5a IgG treated sham animals and septic littermates 24 hours after caecal ligation and puncture (CLP) procedure. (a) Following total RNA isolation from pituitary tissue, pituitary C5aR mRNA expression was assessed by real-time PCR. For each bar, sample size was five to seven. (b) Five pituitary tissue samples were removed at indicated time-points, homogenised and C5aR protein expression was analysed by Western blotting. For sham groups, two samples were taken; for CLP groups, three samples were taken. Blot is representative for three independent experiments. GAPDH = glyceraldehyde 3-phosphate dehydrogenase. # p < 0.05 between sham and 24 hours CLP animals; * p < 0.05 between IgG-treated and anti-C5a-treated rats.