References

Canseco, R. S., Sparks, A. E., Page, R. L., Russell, C. G., Johnson, J. L., Velander, W. H., Pearson, R. E., Drohan, W. N., and Gwazdauskas, F. C. (1994). Gene transfer efficiency during gestation and the influence of co-transfer of non-manipulated embryos on production of transgenic mice. Transgenic Res. 3, 20–25.
| CrossRef | CAS | PubMed |

Concannon, P. W., Butler, W. R., Hansel, W., Knight, P. J., and Hamilton, J. M. (1978). Parturition and lactation in the bitch: serum progesterone, cortisol and prolactin. Biol. Reprod. 19, 1113–1118.
| CrossRef | CAS | PubMed |

De Sousa, P. A., Dobrinsky, J. R., Zhu, J., Archibald, A. L., Ainslie, A., Bosma, W., Bowering, J., Bracken, J., Ferrier, P. M., Fletcher, J., Gasparrini, B., Harkness, L., Johnston, P., Ritchie, M., Ritchie, W. A., Travers, A., Albertini, D., Dinnyes, A., King, T. J., and Wilmut, I. (2002). Somatic cell nuclear transfer in the pig: control of pronuclear formation and integration with improved methods for activation and maintenance of pregnancy. Biol. Reprod. 66, 642–650.
| CrossRef | CAS | PubMed |

Doak, R. L., Hall, A., and Dale, H. E. (1967). Longevity of spermatozoa in the reproductive tract of the bitch. J. Reprod. Fertil. 13, 51–58.
| CrossRef | CAS | PubMed |

Eilts, B. E., Davidson, A. P., Hosgood, G., Paccamonti, D. L., and Baker, D. G. (2005). Factors affecting gestation duration in the bitch. Theriogenology 64, 242–251.
| CrossRef | PubMed |

England, G. C., Allen, W. E., and Blythe, S. A. (1989). Variability of the time of calculated LH release in 218 canine pregnancies. Vet. Rec. 125, 624–625.
| CAS | PubMed |

Freshney, R. I. (2005). Principles of Cryopreservation. In ‘Culture of Animal Cells.’ (Ed. R. I. Freshney.) pp. 322–331. (John Wiley & Sons, Inc.: Hoboken, New Jersey)

Gavrilovic, B. B., Andersson, K., and Linde Forsberg, C. (2008). Reproductive patterns in the domestic dog – a retrospective study of the Drever breed. Theriogenology 70, 783–794.
| CrossRef | PubMed |

González-Bulnes, A., Baird, D. T., Campbell, B. K., Cocero, M. J., García-García, R. M., Inskeep, E. K., López-Sebastián, A., McNeilly, A. S., Santiago-Moreno, J., Souza, C. J., and Veiga-López, A. (2004). Multiple factors affecting the efficiency of multiple ovulation and embryo transfer in sheep and goats. Reprod. Fertil. Dev. 16, 421–435.
| CrossRef | PubMed |

Hong, S. G., Jang, G., Kim, M. K., Oh, H. J., Park, J. E., Kang, J. T., Koo, O. J., Kim, D. Y., and Lee, B. C. (2009a). Dogs cloned from fetal fibroblasts by nuclear transfer. Anim. Reprod. Sci. 115, 334–339.
| CrossRef | CAS | PubMed |

Hong, S. G., Kim, M. K., Jang, G., Oh, H. J., Park, J. E., Kang, J. T., Koo, O. J., Kim, T., Kwon, M. S., Koo, B. C., Ra, J. C., Kim, D. Y., Ko, C., and Lee, B. C. (2009b). Generation of red fluorescent protein transgenic dogs. Genesis 47, 314–322.
| CrossRef | CAS | PubMed |

Hossein, M. S., Kim, M. K., Jang, G., Fibrianto, H. Y., Oh, H. J., Kim, H. J., Kang, S. K., and Lee, B. C. (2007). Influence of season and parity on the recovery of in vivo canine oocytes by flushing fallopian tubes. Anim. Reprod. Sci. 99, 330–341.
| CrossRef | CAS | PubMed |

Jang, G., Kim, M. K., Oh, H. J., Hossein, M. S., Fibrianto, Y. H., Hong, S. G., Park, J. E., Kim, J. J., Kim, H. J., Kang, S. K., Kim, D. Y., and Lee, B. C. (2007). Birth of viable female dogs produced by somatic cell nuclear transfer. Theriogenology 67, 941–947.
| CrossRef | CAS | PubMed |

Jang, G., Hong, S. G., Oh, H. J., Kim, M. K., Park, J. E., Kim, H. J., Kim, D. Y., and Lee, B. C. (2008). A cloned toy poodle produced from somatic cells derived from an aged female dog. Theriogenology 69, 556–563.
| CrossRef | CAS | PubMed |

Jang, G., Kim, M. K., and Lee, B. C. (2010). Current status and applications of somatic cell nuclear transfer in dogs. Theriogenology 74, 1311–1320.
| CrossRef | PubMed |

Kawarasaki, T., Otake, M., Tsuchiya, S., Shibata, M., Matsumoto, K., and Isobe, N. (2009). Co-transfer of parthenogenotes and single porcine embryos leads to full-term development of the embryos. Anim. Reprod. Sci. 112, 8–21.
| CrossRef | CAS | PubMed |

Kim, M. J., Oh, H. J., Park, J. E., Hong, S. G., Kang, J. T., Koo, O. J., Kang, S. K., Jang, G., and Lee, B. C. (2010). Influence of oocyte donor and embryo recipient conditions on cloning efficiency in dogs. Theriogenology 74, 473–478.
| CrossRef | CAS | PubMed |

King, T. J., Dobrinsky, J. R., Zhu, J., Finlayson, H. A., Bosma, W., Harkness, L., Ritchie, W. A., Travers, A., McCorquodale, C., Day, B. N., Dinnyes, A., De Sousa, P. A., and Wilmut, I. (2002). Embryo development and establishment of pregnancy after embryo transfer in pigs: coping with limitations in the availability of viable embryos. Reproduction 123, 507–515.
| CrossRef | CAS | PubMed |

Lai, L., Park, K. W., Cheong, H. T., Kuhholzer, B., Samuel, M., Bonk, A., Im, G. S., Rieke, A., Day, B. N., Murphy, C. N., Carter, D. B., and Prather, R. S. (2002). Transgenic pig expressing the enhanced green fluorescent protein produced by nuclear transfer using colchicine-treated fibroblasts as donor cells. Mol. Reprod. Dev. 62, 300–306.
| CrossRef | CAS | PubMed |

Lee, B. C., Kim, M. K., Jang, G., Oh, H. J., Yuda, F., Kim, H. J., Hossein, M. S., Kim, J. J., Kang, S. K., Schatten, G., and Hwang, W. S. (2005). Dogs cloned from adult somatic cells. Nature 436, 641.
| CrossRef | CAS | PubMed |

Meng, Q., Wang, M., Stanca, C. A., Bodo, S., and Dinnyes, A. (2008). Co-transfer of parthenogenetic embryos improves the pregnancy and implantation of nuclear transfer embryos in mouse. Cloning Stem Cells 10, 429–434.
| CrossRef | CAS | PubMed |

Meng, Q., Polgar, Z., Liu, J., and Dinnyes, A. (2009). Live birth of somatic cell-cloned rabbits following trichostatin A treatment and co-transfer of parthenogenetic embryos. Cloning Stem Cells 11, 203–208.
| CrossRef | CAS | PubMed |

Oh, H. J., Kim, M. K., Jang, G., Kim, H. J., Hong, S. G., Park, J. E., Park, K., Park, C., Sohn, S. H., Kim, D. Y., Shin, N. S., and Lee, B. C. (2008). Cloning endangered gray wolves (Canis lupus) from somatic cells collected postmortem. Theriogenology 70, 638–647.
| CrossRef | CAS | PubMed |

Oh, H. J., Hong, S. G., Park, J. E., Kang, J. T., Kim, M. J., Kim, M. K., Kang, S. K., Kim, D. Y., Jang, G., and Lee, B. C. (2009). Improved efficiency of canine nucleus transfer using roscovitine-treated canine fibroblasts. Theriogenology 72, 461–470.
| CrossRef | CAS | PubMed |

Oh, H. J., Park, J. E., Kim, M. J., Hong, S. G., Ra, J. C., Jo, J. Y., Kang, S. K., Jang, G., and Lee, B. C. (2011). Recloned dogs derived from adipose stem cells of a transgenic cloned beagle. Theriogenology 75, 1221–1231.
| CrossRef | PubMed |

Onishi, A., Iwamoto, M., Akita, T., Mikawa, S., Takeda, K., Awata, T., Hanada, H., and Perry, A. C. (2000). Pig cloning by microinjection of fetal fibroblast nuclei. Science 289, 1188–1190.
| CrossRef | CAS | PubMed |

Park, J. E., Oh, H. J., Hong, S. G., Kim, M. J., Kim, G. A., Koo, O. J., Kang, S. K., Jang, G., and Lee, B. C. (2010). Effective donor cell fusion conditions for production of cloned dogs by somatic cell nuclear transfer. Theriogenology 75, 777–782.
| CrossRef |

Petersen, B., Lucas-Hahn, A., Oropeza, M., Hornen, N., Lemme, E., Hassel, P., Queisser, A. L., and Niemann, H. (2008). Development and validation of a highly efficient protocol of porcine somatic cloning using preovulatory embryo transfer in peripubertal gilts. Cloning Stem Cells 10, 355–362.
| CrossRef | CAS | PubMed |

Popova, E., Bader, M., and Krivokharchenko, A. (2006). Full-term development of rat after transfer of nuclei from two-cell stage embryos. Biol. Reprod. 75, 524–530.
| CrossRef | CAS | PubMed |

Verma, P. J., Du, Z. T., Crocker, L., Faast, R., Grupen, C. G., McIlfatrick, S. M., Ashman, R. J., Lyons, I. G., and Nottle, M. B. (2000). In vitro development of porcine nuclear transfer embryos constructed using fetal fibroblasts. Mol. Reprod. Dev. 57, 262–269.
| CrossRef | CAS | PubMed |