Immunogen sequence: MEDTQAIDWD VEEEEETEQS SESLRCNVEP VGRLHIFSGA HGPEKDFPLH LGKNVVGRMP DCSVALPFPS ISKQHAEIEI LAWDKAPILR DCGSLNGTQI; Positive Samples: Mouse testis; Cellular Location: Chromosome, Nucleus. MDC1 participates in the early response to DNA dama