Changing of the guard: How the Lyme disease spirochete subverts the host immune response — Antigenic variation in the Lyme disease spirochete — Changing of the guard: How the Lyme disease spirochete subverts the host immune response — Antigenic variation in the Lyme disease spirochete — Changing of the guard: How the Lyme disease spirochete subverts the host immune response — JBC REVIEWS: Antigenic variation in the Lyme disease spirochete