FIG. 3.

TNF-α production induced in human monocytes by group B polysaccharide in the absence (A) or presence (B) of heat-inactivated FCS. Human monocytes were pretreated with MAbs (100 μg/ml) before stimulation with group B CHO. The following MAbs were employed: TS1/18 (anti-CD18); LM-2/1.6 (anti-CD11b); HB 247 (anti-CD14). Columns and bars represent means ± standard deviations of three independent observations. ∗, significantly (P < 0.05) different from controls by one-way analysis of variance and Student-Newman-Keuls test.