Characterization of in vivo expanded OspA-specific human T-cell clones - Ausubel, L; O'Connor, K; Baecher-Allen, C; Trollmo, C; Kessler, B; Hekking, B; Merritt, D; Meyer, A; Kwok, B; Ploegh, H; Huber, B; Hafler, D (2005)