LigA expression in hamsters infected with L. interrogans serovar pomona. Sections of kidney were treated with rabbit antiserum specific for a 90-kDa truncated LigA (A), L. interrogans serovar pomona (B), LipL32 (C), LipL36 (D), and with preimmune serum (E). Kidney sections from noninfected hamsters were unreactive. Bar, 67 μm.