DKK1 and infection: To further determine the possibility of DKK1 promoting recruitment of activated neutrophils to the infection site, the MFI of Ly6G+ neutrophils and MPO-positive neutrophils were determined from cells obtained from the footpad of infected WT BALB/c, LRP6NKO, LRP6NKO DKK1PKO and non-infected BALB/c mice.