Supplementary Materials [Online Supplement] supp_45_4_711__index. receptor of gram-positive bacteria, because TLR2 recognizes PGNs, lipoteichoic acid, and lipoproteins that are associated with the cell wall of gram-positive bacteria (12, 13). TLR2 is highly expressed on antigen-presenting cells, such as macrophages, cells important in mediating the innate immune response to inhaled organic dust (14, 15). On airway… Continue reading Supplementary Materials [Online Supplement] supp_45_4_711__index. receptor of gram-positive bacteria, because TLR2