Copyright information:Taken from "IL-12 Production Induced by Fraction H (ABH) Involves Toll-like Receptor (TLR)"Evidence-based Complementary and Alternative Medicine 2004;1(3):259-267.Published online Jan 2004PMCID:PMC538514.© 2004, the authors . The online version of this article has been published under an open access model. Users are entitled to use, reproduce, disseminate, or display the open access version of this article provided that: the original authorship is properly and fully attributed; the Journal and Oxford University Press are attributed as the original place of publication with the correct citation details given; if an article is subsequently reproduced or disseminated not in its entirety but only in part or as a derivative work this must be clearly indicated. () PBMCs were pre-incubated with anti-CD14, anti-TLR4, anti-TLR2 or control monoclonal antibody at four different doses (1000, 100, 10, 1 ng). extract was added after 4 h and incubation was continued for 16 h. IL-12 p40 in supernatants was quantified by ELISA. Data from three independent donors are shown. () Cells pre-treated with 1 μg of control monoclonal antibody (b), 1 μg of anti-CD14 antibody (c) or 1 μg of anti-TLR4 antibody (d) were stimulated with ABH for 16 h (b–d). Then, IL-12-producing cells were quantified by flow cytometry. Unstimulated PBMCs (a) were included as controls. Data shown are representative of three independent experiments.