Figure 4

Neighbor-Joining tree based on the D1-D5 nucleotide sequences of X. tropicalis XFLs and human FcR and FCRL genes. X. tropicalis genes are designated according to a scaffold number and their consecutive position (See Fig. 1). For genes containing multiple exons for domains of the same type these exons are numbered according to their position (i. e. D3.1-D3.3). The tree was constructed using MEGA3 software with p-distances for nucleotide sequence sites and pair-wise deletion option. The numbers on the tree represent values for the bootstrap and interior branch tests after 250 replicates.