4. Kubota C., Yamakuchi H., Todoroki J., Mizoshita K., Tabara N., Barber M., Yang X. 2000 Feb. 01. Six cloned calves produced from adult fibroblast cells after long-term culture. Proc Natl Acad Sci U S A 97(3):990-5.

5. Lanza R.P., Cibelli J.B., Blackwell C., Cristofalo V.J., Francis M.K., Baerlocher G.M., Mak J., Schertzer M., Chavez E.A., Sawyer N., Lansdorp P.M., West M.D. 2000 Apr. 28. Extension of cell life-span and telomere length in animals cloned from senescent somatic cells. Science 288(5466):665-9.

6. Shiels P.G., Kind A.J., Campbell K.H., Waddington D., Wilmut I., Colman A., Schnieke A.E. 1999 May 27. Analysis of telomere lengths in cloned sheep. Nature 399(6734): 316-7.

7. Tian X.C., Xu J., Yang X. 2000 Nov. Normal telomere lengths found in cloned cattle. Nat Genet 26(3):272-3.

8. Vogel G. 2000 Apr. 28. In contrast to Dolly, cloning resets telomere clock in cattle. Science 288(5466):586-7.

9. Wakayama T., Shinkai Y., Tamashiro K.L., Niida H., Blanchard D.C., Blanchard R.J., Ogura A., Tanemura K., Tachibana M., Perry A.C., Colgan D.F., Mombaerts P., Yanagimachi R. 2000 Sept. 21. Cloning of mice to six generations. Nature 407(6802): 318-9.

10. Wright W.E., Piatyszek M.A., Rainey W.E., Byrd W., Shay J.W. 1996. Telomerase activity in human germline and embryonic tissues and cells. Dev Genet 18(2):173-9.

11. Xu J., Yang X. 2001 Mar. Telomerase activity in early bovine embryos derived from parthenogenetic activation and nuclear transfer. Biol Reprod 64(3):770-4.



The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement