Figure 1From: Identification and functional characterisation of Complement Regulator Acquiring Surface Protein-1 of serum resistant Borrelia garinii OspA serotype 4In vitro serum susceptibility of B. garinii ST4 PBi, B. garinii non-ST4 VSBP, and B. burgdorferi ss B31. Resistance to complement was determined by counting motile spirochetes by dark-field microscopy and values obtained were represented as percentages of survival. All strains were tested in triplicate with 50% NHS and HiNHS. VSBP is rapidly killed by complement, while >75%of B. burgdorferi ss B31 and B. garinii ST4 PBi are alive after 3 hours of incubation.Back to article page