PLAUR and Lyme disease: Inaddition, it has been described that F1 of WT C57BL/6 crossed with (x) C3H/HeNmice are intermediately sensitive to B. burgdorferi infection[30].Therefore we investigated the course of Lyme borreliosis in F2 ofC57BL/6×C3H/HeN uPAR knock-out mice and WT littermate controls.