1. Kind AJ, Campbell KHS. Viable offspring derived from fetal and adult mammalian cells;Wilmut, I.; Schnieke, A.E.; McWhir, J.;Nature,1987
2. Kind A, Schnieke A et al. DNA microsatellite analysis of Dolly;D, See Ashworth; M, Bishop; K, Campbell; A, Colman;Nature,1998
3. Full-term development of mice from enucleated oocytes injected with cumulus cell nuclei;Wakayama, T.; Perry, A.C.F.; Zuccottis, M.; Johnson, K.R.; Yanagimachi, R.;Nature,1998
4. This view is echoed in the opinion section of;Nature,1998
5. For discussion of why it may be difficult to pinpoint the source of people's discomfort with human cloning see Kass LR. The wisdom of repugnance,1997