National Center for Biotechnology Information NCBI NLM MEDLINE Mice animals humans pubmed abstract nih national institutes of health national library of medicine research support non-u.s. gov't u.s. gov't P.H.S. Cells Cultured cell line Receptors gene expression regulation / drug effects signal transduction / drug effects transfection tumor cells lipopolysaccharides / pharmacology signal transduction / immunology* inbred c3h phenol drosophila proteins* membrane glycoproteins / genetics cell surface / genetics toll-like receptor 4 toll-like receptors pmid:10878331 doi:10.4049/jimmunol.165.2.618 m hirschfeld y ma j j weis drug contamination gene expression regulation / immunology genetic vectors / genetics genetic vectors / immunology lipid a / isolation & purification lipid a / pharmacology lipopolysaccharides / isolation & purification* membrane glycoproteins / biosynthesis membrane glycoproteins / physiology* cell surface / biosynthesis cell surface / physiology* toll-like receptor 2