| Receptor | Cellular type | Localization | Reference |
| TLR1 | Monocytes, mature macrophages, mast cell, and dendritic cells | Cell surface | [191] | TLR2 | Monocytes, mature macrophages, and mast cell | Cell surface | [191] | TLR3 | Dendritic cells | Endosomes | [191] | TLR4 | Predominately in monocytes, mature macrophages, dendritic cells, mast cells, and intestinal epithelial cells | Cell surface | [191] | TLR5 | Predominately in intestinal epithelial cells, monocytes, macrophages, and dendritic cells | Cell surface | [191] | TLR6 | Monocytes, mature macrophages, and mast cell | Cell surface | [191] | TLR7 | Monocytes, macrophages, and plasmacytoid dendritic cells | Endosomes | [191] | TLR8 | Monocytes, macrophages, and mast cells | Endosomes | [191] | TLR9 | Monocytes, macrophages, and plasmacytoid dendritic cells | Endosomes | [191] | TLR10 | Macrophages, trophoblasts, and intestinal epithelial cells in response to L. monocytogenes | Cell surface, but can colocalize with TLR2 in phagosome | [23–25] | TLR11 | Macrophages, dendritic cells, and human embryonic kidney cells | Cell surface and endoplasmic reticulum | [26, 27] | TLR12 | Macrophages and dendritic cells | Colocalizes with TLR11 in endoplasmic reticulum | [26, 27] | NOD1 | Macrophages, human mononuclear cells, intestinal epithelial cells, and dendritic cells | Intracellularly | [50–52] | NOD2 | Macrophages, neutrophils, dendritic cells, Paneth cells, human airway smooth muscle cells, and epithelial and endothelial cells | Intracellularly | [50–52] | NLRC4 | Macrophages and gut epithelial cells | Intracellularly | [109, 111, 114] | NLRP1 | Lymphocytes, respiratory epithelial cells, and myeloid cells | Intracellularly | [95, 96] | NLRP3 | Myeloid cells and human bronchial epithelial cells | Intracellularly | [82] |
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