CXCL10 and synovial sarcoma: While the role of CD11b+ cells as APC following SS remains to be explored, the increase of CD11b+ cells at the SS site in IP-10 -/- mice immunized with AddaVax + Resiquimod + CpG could reflect a failure or delay of APC to transit out of skin to the dLN in the absence of an IP-10 signal.