Initial sequencing and comparative analysis of the mouse genome. by Waterston, R, Lindblad-Toh, K, Birney, E, Rogers, J, Abril, J, Agarwal, P, Agarwala, R, Ainscough, R, Alexandersson, M, An, P, Antonarakis, SE, Attwood, J, Baertsch, R, Bailey, J, Barlow, K, Beck, S, Berry, E, Birren, B, Bloom, T, Bork, P, Botcherby, M, Bray, N, Brent, MR, Brown, D, Brown, S