SDS-PAGE and Coomassie blue staining of B. burgdorferi sensu lato isolates. In each panel, the protein profiles of B31T (B. burgdorferi sensu stricto), PBi (B. garinii), and VS461T (B. afzelii) are also given. Lanes M contain molecular mass markers of the sizes shown. (A) Isolates from Basque Country. Lanes: 1, B31; 2, Esp1; 3, PV2; 4, PV1; 5, PV3; 6, PBi; 7, PV6; 8, PV4; 9, PV5; 10, VS461; 11, PV7. (B) Isolates from La Rioja. Lanes: 1, B31; 2, VS461; 3, Rio6; 4, PBi; 5, Rio4; 6, Rio2; 7, Rio3; 8, Rio5.