- Elucidation of correspondence between swine chromosome 4 and human chromosome 1 by assigning 27 genes to the ImpRH map, and development of microsatellites in the proximity of 14 genes. Hiraiwa, H., Sawazaki, T., Suzuki, K., Fujishima-Kanaya, N., Toki, D., Ito, Y., Uenishi, H., Hayashi, T., Awata, T., Yasue, H. Cytogenet. Genome Res. (2003)