TLR4 and Nasal polyposis: TLR2 and TLR4 mRNA:immature and mature MC from murine and human origins (Supajatura et al., 2002). TLR2 protein: hCBMC and nasal polyps MC (McCurdy et al., 2003). TLR2 and TLR4 protein:murine intestine MC and murine and rat peritoneal MC (Pietrzak et al., 2011)