Dolly the sheep cloning technique

Dolly the sheep cloning technique

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This image is part of the feature Dolly The Cloned Sheep

Credit: W.A. RITCHIE/ROSLIN INSTITUTE/EURELIOS/ SCIENCE PHOTO LIBRARY

Caption: "Dolly" cloning technique (second of 5 pictures). Light micrograph of a sheep egg having its nucleus (DNA) removed during cloning of "Dolly", the first sheep cloned from an adult cell. At centre is a sheep egg cell. At left a pipette holds the egg; at right a needle penetrates the egg to remove its DNA. The empty egg cell will then be injected with a sheep udder cell. A spark of electricity fuses these cells into one and stimulates an embryo to grow. The embryo is implanted into the womb of a surrogate sheep. Research conducted by Dr Wilmut at the Roslin Institute, Edinburgh, Scotland. (see photos G285/037, G285/039, G285/040, G285/041).

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Keywords: animal, bioengineering, biotechnology, clone, cloned, cloning, egg, engineered, engineering, genetic, genetically, genetics, light micrograph, procedure, research, sheep, transgenic

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