∼56% IgG), was kindly provided by Biotest AG (Dreieich, Germany).
Purified Escherichia coli LPS 0111:B4,
Staphylococcus aureus-derived lipoteichoic acid
(LTA), ConA and recombinant IL-2 were obtained from Sigma-Aldrich (St.
Louis, MO).
Fluorescently labelled Abs for flow cytometry were purchased from the
following manufacturers: anti-human leukocyte Ag–DR isotype (HLA-DR
G46-6-PE) and anti-TNF-α (mAB11) from BD Biosciences (San Jose, CA);
anti-TLR2 (CD282-PE) and anti-TLR4 (HTA125-PE) from eBioscience (San
Diego, CA); anti-cluster of differentiation 16 (CD16; 3G8-PE),
anti-CD64 (22-PC5), anti-CD11b (Bear1-PC5), anti-CD11c (BU15-PC5),
anti-CD3 (UCHT1-PC7), anti-CD4 (13B8.2-PC5) and anti-CD8
(SFCI21Thy2D3-ECD) from Beckman Coulter (Fullerton, CA); and anti-CD14
(My4; FITC, PC5 or PC7 conjugated) from Beckman Coulter (Indianapolis,
IN).