CX3CR1 and infection: However, expression studies in mice show that three genes are differentially expressed in divergent mouse phenotypes post infection with Trypanosoma congolense [85] which includes MyD88, chemokine (C-X3-C motif) receptor 1 (CX3CR1), and chemokine binding protein 2 (CCBP2) and one post infection with Yersinia enterocolitica (CX3CR1) [86].