Reptile Toll-like receptor 5 unveils adaptive evolution of bacterial flagellin recognition. Voogdt CG, Bouwman LI, Kik MJ, Wagenaar JA, van Putten JP.Sci Rep. 2016 Jan 7;6:19046. Toll-like receptors (TLR) are ancient innate immune receptors crucial for immune homeostasis and protection against infection. TLRs are present in mammals, birds, amphibians and fish but have not been functionally characterized in reptiles despite