Fig. 8From: The evolution of the metazoan Toll receptor family and its expression during protostome developmentOrigin and evolution of TLRs. Gene lineages are depicted in different colors (TLR-Cα: light brown; TLR-Cβ/γ and TLR-Cβ: light grey; and TLR-Cγ: dark grey) within the metazoan tree. Gene losses are indicated with a cross. Phylogeny according to: [98]. For other hypotheses see Additional file 11: Fig. S5Back to article page