 | About the cover
July 2002 - Vol 20 No 7
Nature Biotechnology 20 (2002)
| | |  | Nuclear transplantation in process. A bovine oocyte is held by a glass pipette (left),while a glass needle (right) is used to remove the maternal nucleus. A polar body (top) is located just underneath the zona pellucida (the thick envelope surrounding the ovum). Stained with bisbenzimide (Hoeschst 33342; Sigma) dye and visualized under a fluorescence microscope. On page 689, Lanza et al. report the successful transplantation of cloned cells into a steer. Picture courtesy Advanced Cell Technology.
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