FCGRT and infection: In contrast, while in vivo murine models indicate that anti-MOMP and anti-LPS IgG can inhibit Ct infection and reduce shedding in mice [19], in vitro opsonization of EBs by some monoclonal IgG antibodies can enhance EB uptake in vitro by epithelial cells expressing FcγRII, FcγRIII, or FcRn [22, 56, 57], illustrating potentially more dichotomous roles for IgG.