Table 1.

The source cell, location and associated bacteria for toll-like receptors.

Receptor	Location	Cells	Bacteria
Toll-like receptor 1	Cell membrane	Myeloid dendritic cells, monocytes	Not specified
Toll-like receptor 2	Cell membrane	Monocytes, natural killer cells, myeloid dendritic cells,mast cells, T-cells, epithelial cells	Porphyromonas gingivalis Escherichia coli Tannerella forsythia Prevotella intermedia Prevotella nigrescens Treponema denticola
Toll-like receptor 3	Intracellular	Myeloid dendritic cells, natural killer cells, epithelial cells	Not specified
Toll-like receptor 4	Cell membrane	Monocytes, mast cells, neutrophils, T cells, epithelial cells, endothelial cells	Aggregatibacter actinomycetemcomitans, Veillonella parvula
Toll-like receptor 5	Cell membrane	Monocytes, natural killer cells, myeloid dendritic cells epithelial cells	Not specified
Toll-like receptor 6	Cell membrane	Myeloid cells, mast cells, B-cells, myeloid dendritic cells	Escherichia coli
Toll-like receptor 7	Intracellular	Plasmacytoid dendritic cells, B-cells, eosinophils	Not specified
Toll-like receptor 8	Intracellular	Natural killer cells, T-cells, myeloid cells, myeloid dendritic cells	Not specified
Toll-like receptor 9	Intracellular	Plasmacytoid dendritic cells, B-cells, natural killer cells	Porphyromonas gingivalis Aggregatibacter actinomycetemcomitans
Toll-like receptor 10	Cell membrane	B-cells, plasmacytoid dendritic cells, myeloid dendritic cells	Not specified
Toll-like receptor 11	Intracellular	Macrophages, dendritic cells, epithelial cells	Not specified