1. Campbell K.H.S. Nuclear equivalence, nuclear transfer and cell cycle. Cloning 1999, 1: 3–15.
2. Wakayama T., Yanagimachi R. Cloning the laboratory mouse. Cell. Dev. Biol. 1999, 10: 253–258.
3. Spemann H. Embryonic development and induction. Yale University, Press, New Haven, CT, 1998.
4. Briggs R., King T.J. Transplantation of living nuclei from blastula cells into trophoblast: studies on polyploid. J. Embryol. Exp. Morphol. 1952, 27: 447–465.
5. Gurdon J.B. The developmental capacity of nuclei taken from intestinal epithelium cells of feeding tadpoles. J. Embryol. Exp. Morphol. 1962, 10: 622–640.