Technician removing cow eggs from a petri dish

Technician removing cow eggs from a petri dish

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Credit: GEOFF TOMPKINSON/SCIENCE PHOTO LIBRARY

Caption: MODEL RELEASED. Animal biotechnology. Embryologist removing cow ovarian follicles from a petri dish as part of an in vitro fertilisation (IVF) technique. Each of these cow follicles contain a single immature egg or oocyte. The oocytes are placed in a special fluid medium and then fertilised by sperm. After fertilisation, the resulting embryo is placed in a culture until it reaches the blastocyst stage which contains about 100 cells. The blastocyst is placed in the womb (uterus) of a cow, where it implants to cause a pregnancy. This technique is used with a number of species for spreading favourable genes.

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Keywords: animal, animal biotechnology, bioengineering, biotech., biotechnology, cow, egg, eggs, embryo research, engineered, engineering, follicle, genetic, genetically, genetics, in vitro fertilisation, ivf, ovarian, ovarian follicle, research, transgenic

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